99031725 has 36 divisors (see below), whose sum is σ = 191026836. Its totient is φ = 48752640.

The previous prime is 99031711. The next prime is 99031733. The reversal of 99031725 is 52713099.

It can be written as a sum of positive squares in 6 ways, for example, as 248004 + 98783721 = 498^2 + 9939^2 .

It is not a de Polignac number, because 99031725 - 2⁵ = 99031693 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99031725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14004 + ... + 19853.

It is an arithmetic number, because the mean of its divisors is an integer number (5306301).

Almost surely, 2^99031725 is an apocalyptic number.

It is an amenable number.

99031725 is a deficient number, since it is larger than the sum of its proper divisors (91995111).

99031725 is a wasteful number, since it uses less digits than its factorization.

99031725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33886 (or 33878 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 99031725 is about 9951.4684846007. The cubic root of 99031725 is about 462.6559104261.

It can be divided in two parts, 9903 and 1725, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 99031725 in words is "ninety-nine million, thirty-one thousand, seven hundred twenty-five".