18525904056 has 96 divisors (see below), whose sum is σ = 54788263920. Its totient is φ = 5608512000.

The previous prime is 18525904013. The next prime is 18525904121. The reversal of 18525904056 is 65040952581.

18525904056 is a `hidden beast` number, since 1 + 8 + 5 + 2 + 590 + 4 + 0 + 56 = 666.

It is a super-2 number, since 2×18525904056² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 854956 + ... + 876356.

Almost surely, 2^18525904056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18525904056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27394131960).

18525904056 is an abundant number, since it is smaller than the sum of its proper divisors (36262359864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18525904056 is a wasteful number, since it uses less digits than its factorization.

18525904056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22517 (or 22510 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 18525904056 in words is "eighteen billion, five hundred twenty-five million, nine hundred four thousand, fifty-six".