99020025 has 72 divisors (see below), whose sum is σ = 193520600. Its totient is φ = 48107520.

The previous prime is 99020017. The next prime is 99020027. The reversal of 99020025 is 52002099.

It can be written as a sum of positive squares in 12 ways, for example, as 34715664 + 64304361 = 5892^2 + 8019^2 .

It is not a de Polignac number, because 99020025 - 2³ = 99020017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99020027) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 283551 + ... + 283899.

Almost surely, 2^99020025 is an apocalyptic number.

It is an amenable number.

99020025 is a deficient number, since it is larger than the sum of its proper divisors (94500575).

99020025 is a wasteful number, since it uses less digits than its factorization.

99020025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 99020025 is about 9950.8806142974. The cubic root of 99020025 is about 462.6376897084.

The spelling of 99020025 in words is "ninety-nine million, twenty thousand, twenty-five".