99925525 has 24 divisors (see below), whose sum is σ = 144633600. Its totient is φ = 67056960.

The previous prime is 99925523. The next prime is 99925537. The reversal of 99925525 is 52552999.

It is a happy number.

It is not a de Polignac number, because 99925525 - 2¹ = 99925523 is a prime.

It is a super-2 number, since 2×99925525² = 19970221093051250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99925523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2151 + ... + 14299.

It is an arithmetic number, because the mean of its divisors is an integer number (6026400).

Almost surely, 2^99925525 is an apocalyptic number.

It is an amenable number.

99925525 is a deficient number, since it is larger than the sum of its proper divisors (44708075).

99925525 is a wasteful number, since it uses less digits than its factorization.

99925525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12213 (or 12208 counting only the distinct ones).

The product of its digits is 364500, while the sum is 46.

The square root of 99925525 is about 9996.2755564260. The cubic root of 99925525 is about 464.0436273014.

The spelling of 99925525 in words is "ninety-nine million, nine hundred twenty-five thousand, five hundred twenty-five".