231057025 has 12 divisors (see below), whose sum is σ = 288231552. Its totient is φ = 183735440.

The previous prime is 231057019. The next prime is 231057041. The reversal of 231057025 is 520750132.

It is not a de Polignac number, because 231057025 - 2⁹ = 231056513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23497 + ... + 31846.

It is an arithmetic number, because the mean of its divisors is an integer number (24019296).

Almost surely, 2^231057025 is an apocalyptic number.

231057025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

231057025 is a deficient number, since it is larger than the sum of its proper divisors (57174527).

231057025 is a wasteful number, since it uses less digits than its factorization.

231057025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55520 (or 55515 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 231057025 is about 15200.5600225781. The cubic root of 231057025 is about 613.6297295039.

The spelling of 231057025 in words is "two hundred thirty-one million, fifty-seven thousand, twenty-five".