23131025 has 6 divisors (see below), whose sum is σ = 28682502. Its totient is φ = 18504800.

The previous prime is 23131001. The next prime is 23131027. The reversal of 23131025 is 52013132.

It can be written as a sum of positive squares in 3 ways, for example, as 14161 + 23116864 = 119^2 + 4808^2 .

It is not a de Polignac number, because 23131025 - 2⁸ = 23130769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23130994 and 23131012.

It is not an unprimeable number, because it can be changed into a prime (23131027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 462596 + ... + 462645.

It is an arithmetic number, because the mean of its divisors is an integer number (4780417).

Almost surely, 2^23131025 is an apocalyptic number.

23131025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23131025 is a deficient number, since it is larger than the sum of its proper divisors (5551477).

23131025 is an equidigital number, since it uses as much as digits as its factorization.

23131025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925251 (or 925246 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 23131025 is about 4809.4724242894. The cubic root of 23131025 is about 284.9257013668.

Adding to 23131025 its reverse (52013132), we get a palindrome (75144157).

The spelling of 23131025 in words is "twenty-three million, one hundred thirty-one thousand, twenty-five".