25807425 has 24 divisors (see below), whose sum is σ = 48764736. Its totient is φ = 11797440.

The previous prime is 25807417. The next prime is 25807429. The reversal of 25807425 is 52470852.

It is not a de Polignac number, because 25807425 - 2³ = 25807417 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25807429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24054 + ... + 25103.

It is an arithmetic number, because the mean of its divisors is an integer number (2031864).

Almost surely, 2^25807425 is an apocalyptic number.

25807425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25807425 is a deficient number, since it is larger than the sum of its proper divisors (22957311).

25807425 is a wasteful number, since it uses less digits than its factorization.

25807425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49177 (or 49172 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

The square root of 25807425 is about 5080.1008848250. The cubic root of 25807425 is about 295.5163798857.

The spelling of 25807425 in words is "twenty-five million, eight hundred seven thousand, four hundred twenty-five".