99972525 has 48 divisors (see below), whose sum is σ = 171417600. Its totient is φ = 51380160.

The previous prime is 99972517. The next prime is 99972533. The reversal of 99972525 is 52527999.

It is an interprime number because it is at equal distance from previous prime (99972517) and next prime (99972533).

It is not a de Polignac number, because 99972525 - 2³ = 99972517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 278296 + ... + 278654.

It is an arithmetic number, because the mean of its divisors is an integer number (3571200).

Almost surely, 2^99972525 is an apocalyptic number.

It is an amenable number.

99972525 is a deficient number, since it is larger than the sum of its proper divisors (71445075).

99972525 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 12 representation: 99972525 = (29592579)₁₂.

99972525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 493 counting only the distinct ones).

The product of its digits is 510300, while the sum is 48.

The square root of 99972525 is about 9998.6261556276. The cubic root of 99972525 is about 464.1163702498.

The spelling of 99972525 in words is "ninety-nine million, nine hundred seventy-two thousand, five hundred twenty-five".