231606375025 has 27 divisors (see below), whose sum is σ = 297526206081. Its totient is φ = 178842058080.

The previous prime is 231606375019. The next prime is 231606375029. The reversal of 231606375025 is 520573606132.

The square root of 231606375025 is 481255.

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 3183554929 + 228422820096 = 56423^2 + 477936^2 .

It is not a de Polignac number, because 231606375025 - 2³ = 231606375017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231606375029) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 69780316 + ... + 69783634.

Almost surely, 2^231606375025 is an apocalyptic number.

231606375025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231606375025 is the 481255-th square number.

231606375025 is the 240628-th centered octagonal number.

It is an amenable number.

231606375025 is a deficient number, since it is larger than the sum of its proper divisors (65919831056).

231606375025 is an frugal number, since it uses more digits than its factorization.

231606375025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706 (or 3353 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 231606375025 in words is "two hundred thirty-one billion, six hundred six million, three hundred seventy-five thousand, twenty-five".