21110524525 has 12 divisors (see below), whose sum is σ = 26199441184. Its totient is φ = 16873974000.

The previous prime is 21110524517. The next prime is 21110524601. The reversal of 21110524525 is 52542501112.

It is not a de Polignac number, because 21110524525 - 2³ = 21110524517 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21110524493 and 21110524502.

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, 331281 + ... + 389830.

Almost surely, 2^21110524525 is an apocalyptic number.

21110524525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21110524525 is a deficient number, since it is larger than the sum of its proper divisors (5088916659).

21110524525 is a wasteful number, since it uses less digits than its factorization.

21110524525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722292 (or 722287 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 21110524525 in words is "twenty-one billion, one hundred ten million, five hundred twenty-four thousand, five hundred twenty-five".