25497625 has 24 divisors (see below), whose sum is σ = 32923800. Its totient is φ = 19713600.

The previous prime is 25497599. The next prime is 25497643. The reversal of 25497625 is 52679452.

It can be written as a sum of positive squares in 12 ways, for example, as 12131289 + 13366336 = 3483^2 + 3656^2 .

It is not a de Polignac number, because 25497625 - 2⁹ = 25497113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171051 + ... + 171199.

It is an arithmetic number, because the mean of its divisors is an integer number (1371825).

Almost surely, 2^25497625 is an apocalyptic number.

25497625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25497625 is a deficient number, since it is larger than the sum of its proper divisors (7426175).

25497625 is an equidigital number, since it uses as much as digits as its factorization.

25497625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 191 counting only the distinct ones).

The product of its digits is 151200, while the sum is 40.

The square root of 25497625 is about 5049.5173036638. The cubic root of 25497625 is about 294.3291276078.

It can be divided in two parts, 254 and 97625, that added together give a palindrome (97879).

The spelling of 25497625 in words is "twenty-five million, four hundred ninety-seven thousand, six hundred twenty-five".