25630775 has 6 divisors (see below), whose sum is σ = 31782192. Its totient is φ = 20504600.

The previous prime is 25630771. The next prime is 25630777. The reversal of 25630775 is 57703652.

It is not a de Polignac number, because 25630775 - 2² = 25630771 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 (25630771) 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, 512591 + ... + 512640.

It is an arithmetic number, because the mean of its divisors is an integer number (5297032).

Almost surely, 2^25630775 is an apocalyptic number.

25630775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25630775 is a deficient number, since it is larger than the sum of its proper divisors (6151417).

25630775 is a wasteful number, since it uses less digits than its factorization.

25630775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025241 (or 1025236 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 25630775 is about 5062.6845645369. The cubic root of 25630775 is about 294.8405726705.

The spelling of 25630775 in words is "twenty-five million, six hundred thirty thousand, seven hundred seventy-five".