99902525 has 12 divisors (see below), whose sum is σ = 124328724. Its totient is φ = 79632000.

The previous prime is 99902519. The next prime is 99902549. The reversal of 99902525 is 52520999.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 182329 + 99720196 = 427^2 + 9986^2 .

It is not a de Polignac number, because 99902525 - 2⁸ = 99902269 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, 86 + ... + 14135.

It is an arithmetic number, because the mean of its divisors is an integer number (10360727).

Almost surely, 2^99902525 is an apocalyptic number.

It is an amenable number.

99902525 is a deficient number, since it is larger than the sum of its proper divisors (24426199).

99902525 is a wasteful number, since it uses less digits than its factorization.

99902525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14512 (or 14507 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 99902525 is about 9995.1250617489. The cubic root of 99902525 is about 464.0080213759.

The spelling of 99902525 in words is "ninety-nine million, nine hundred two thousand, five hundred twenty-five".