23989887525 has 12 divisors (see below), whose sum is σ = 39663280832. Its totient is φ = 12794606640.

The previous prime is 23989887463. The next prime is 23989887557. The reversal of 23989887525 is 52578898932.

It is not a de Polignac number, because 23989887525 - 2⁶ = 23989887461 is a prime.

It is a Duffinian number.

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, 159932509 + ... + 159932658.

Almost surely, 2^23989887525 is an apocalyptic number.

23989887525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23989887525 is a deficient number, since it is larger than the sum of its proper divisors (15673393307).

23989887525 is a wasteful number, since it uses less digits than its factorization.

23989887525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319865180 (or 319865175 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 66.

The spelling of 23989887525 in words is "twenty-three billion, nine hundred eighty-nine million, eight hundred eighty-seven thousand, five hundred twenty-five".