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13253125 = 554241
BaseRepresentation
bin110010100011…
…101000000101
3220221022212111
4302203220011
511343100000
61152021021
7220435564
oct62435005
926838774
1013253125
1175322a6
124531771
1329904b2
141a8dbdb
15126bcba
hexca3a05

13253125 has 12 divisors (see below), whose sum is σ = 16569252. Its totient is φ = 10600000.

The previous prime is 13253101. The next prime is 13253131. The reversal of 13253125 is 52135231.

It can be written as a sum of positive squares in 6 ways, for example, as 6937956 + 6315169 = 2634^2 + 2513^2 .

It is not a de Polignac number, because 13253125 - 27 = 13252997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13253096 and 13253105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1005 + ... + 5245.

It is an arithmetic number, because the mean of its divisors is an integer number (1380771).

Almost surely, 213253125 is an apocalyptic number.

It is an amenable number.

13253125 is a deficient number, since it is larger than the sum of its proper divisors (3316127).

13253125 is an frugal number, since it uses more digits than its factorization.

13253125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4246 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 13253125 is about 3640.4841710959. The cubic root of 13253125 is about 236.6497761756.

Adding to 13253125 its reverse (52135231), we get a palindrome (65388356).

The spelling of 13253125 in words is "thirteen million, two hundred fifty-three thousand, one hundred twenty-five".

Divisors: 1 5 25 125 625 3125 4241 21205 106025 530125 2650625 13253125