25558925 has 12 divisors (see below), whose sum is σ = 36220896. Its totient is φ = 17526000.

The previous prime is 25558921. The next prime is 25558927. The reversal of 25558925 is 52985552.

It is not a de Polignac number, because 25558925 - 2² = 25558921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25558921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72851 + ... + 73200.

It is an arithmetic number, because the mean of its divisors is an integer number (3018408).

Almost surely, 2^25558925 is an apocalyptic number.

25558925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25558925 is a deficient number, since it is larger than the sum of its proper divisors (10661971).

25558925 is a wasteful number, since it uses less digits than its factorization.

25558925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146068 (or 146063 counting only the distinct ones).

The product of its digits is 180000, while the sum is 41.

The square root of 25558925 is about 5055.5835469311. The cubic root of 25558925 is about 294.5648088522.

The spelling of 25558925 in words is "twenty-five million, five hundred fifty-eight thousand, nine hundred twenty-five".