899700025 has 27 divisors (see below), whose sum is σ = 1299287469. Its totient is φ = 616217280.

The previous prime is 899700019. The next prime is 899700049. The reversal of 899700025 is 520007998.

The square root of 899700025 is 29995.

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 117267241 + 782432784 = 10829^2 + 27972^2 .

It is a de Polignac number, because none of the positive numbers 2^k-899700025 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1049397 + ... + 1050253.

Almost surely, 2^899700025 is an apocalyptic number.

899700025 is the 29995-th square number.

899700025 is the 14998-th centered octagonal number.

It is an amenable number.

899700025 is a deficient number, since it is larger than the sum of its proper divisors (399587444).

899700025 is an frugal number, since it uses more digits than its factorization.

899700025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The cubic root of 899700025 is about 965.3821050272.

The spelling of 899700025 in words is "eight hundred ninety-nine million, seven hundred thousand, twenty-five".