231173448025 has 45 divisors (see below), whose sum is σ = 311088889601. Its totient is φ = 170412677760.

The previous prime is 231173448013. The next prime is 231173448029. The reversal of 231173448025 is 520844371132.

The square root of 231173448025 is 480805.

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

It can be written as a sum of positive squares in 22 ways, for example, as 17696182729 + 213477265296 = 133027^2 + 462036^2 .

It is not a de Polignac number, because 231173448025 - 2²¹ = 231171350873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231173448029) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 406279941 + ... + 406280509.

Almost surely, 2^231173448025 is an apocalyptic number.

231173448025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

231173448025 is the 480805-th square number.

231173448025 is the 240403-rd centered octagonal number.

It is an amenable number.

231173448025 is a deficient number, since it is larger than the sum of its proper divisors (79915441576).

231173448025 is an frugal number, since it uses more digits than its factorization.

231173448025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 231173448025 in words is "two hundred thirty-one billion, one hundred seventy-three million, four hundred forty-eight thousand, twenty-five".