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18234025 = 521275743
BaseRepresentation
bin100010110001…
…1101010101001
31021022101101021
41011203222221
514131442100
61450452441
7310662265
oct105435251
937271337
1018234025
11a324547
126134121
133a15684
1425c90a5
151902a1a
hex1163aa9

18234025 has 12 divisors (see below), whose sum is σ = 22792192. Its totient is φ = 14469840.

The previous prime is 18234023. The next prime is 18234031. The reversal of 18234025 is 52043281.

It is not a de Polignac number, because 18234025 - 21 = 18234023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18234023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304 + ... + 6046.

Almost surely, 218234025 is an apocalyptic number.

It is an amenable number.

18234025 is a deficient number, since it is larger than the sum of its proper divisors (4558167).

18234025 is a wasteful number, since it uses less digits than its factorization.

18234025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5875 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 18234025 is about 4270.1317309891. The cubic root of 18234025 is about 263.2050283821.

The spelling of 18234025 in words is "eighteen million, two hundred thirty-four thousand, twenty-five".

Divisors: 1 5 25 127 635 3175 5743 28715 143575 729361 3646805 18234025