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4188031225 = 5272434
BaseRepresentation
bin1111100110100000…
…0100100011111001
3101210212112000210121
43321220010203321
532034113444400
61531324013241
7205532451400
oct37150044371
911725460717
104188031225
11185a041934
1298a691221
13519877cb1
142ba2dc637
15197a1821a
hexf9a048f9

4188031225 has 45 divisors (see below), whose sum is σ = 6184855167. Its totient is φ = 2805006960.

The previous prime is 4188031213. The next prime is 4188031247. The reversal of 4188031225 is 5221308814.

It is a happy number.

The square root of 4188031225 is 64715.

It is a perfect power (a square), and thus also a powerful number.

4188031225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1507691241 + 2680339984 = 38829^2 + 51772^2 .

It is not a de Polignac number, because 4188031225 - 25 = 4188031193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 97396054 + ... + 97396096.

Almost surely, 24188031225 is an apocalyptic number.

4188031225 is the 64715-th square number.

4188031225 is the 32358-th centered octagonal number.

It is an amenable number.

4188031225 is a deficient number, since it is larger than the sum of its proper divisors (1996823942).

4188031225 is an frugal number, since it uses more digits than its factorization.

4188031225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The cubic root of 4188031225 is about 1611.8945875414.

The spelling of 4188031225 in words is "four billion, one hundred eighty-eight million, thirty-one thousand, two hundred twenty-five".

Divisors: 1 5 7 25 35 43 49 175 215 245 301 1075 1225 1505 1849 2107 7525 9245 10535 12943 46225 52675 64715 79507 90601 323575 397535 453005 556549 1987675 2265025 2782745 3418801 3895843 13913725 17094005 19479215 23931607 85470025 97396075 119658035 167521249 598290175 837606245 4188031225