899339272225 has 27 divisors (see below), whose sum is σ = 1121251918041. Its totient is φ = 715575657600.

The previous prime is 899339272211. The next prime is 899339272243. The reversal of 899339272225 is 522272933998.

The square root of 899339272225 is 948335.

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 13383944721 + 885955327504 = 115689^2 + 941252^2 .

It is not a de Polignac number, because 899339272225 - 2³⁵ = 864979533857 is a prime.

It is a super-3 number, since 3×899339272225³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 1142743282 + ... + 1142744068.

Almost surely, 2^899339272225 is an apocalyptic number.

899339272225 is the 948335-th square number.

899339272225 is the 474168-th centered octagonal number.

It is an amenable number.

899339272225 is a deficient number, since it is larger than the sum of its proper divisors (221912645816).

899339272225 is an frugal number, since it uses more digits than its factorization.

899339272225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066 (or 1033 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 61.

The spelling of 899339272225 in words is "eight hundred ninety-nine billion, three hundred thirty-nine million, two hundred seventy-two thousand, two hundred twenty-five".