99700225 has 9 divisors (see below), whose sum is σ = 123690217. Its totient is φ = 79720240.

The previous prime is 99700217. The next prime is 99700241. The reversal of 99700225 is 52200799.

The square root of 99700225 is 9985.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 48205249 + 51494976 = 6943^2 + 7176^2 .

It is not a de Polignac number, because 99700225 - 2³ = 99700217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 48927 + ... + 50923.

Almost surely, 2^99700225 is an apocalyptic number.

99700225 is the 9985-th square number.

99700225 is the 4993-rd centered octagonal number.

It is an amenable number.

99700225 is a deficient number, since it is larger than the sum of its proper divisors (23989992).

99700225 is an frugal number, since it uses more digits than its factorization.

99700225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004 (or 2002 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The cubic root of 99700225 is about 463.6946083608.

The spelling of 99700225 in words is "ninety-nine million, seven hundred thousand, two hundred twenty-five".