25630317 has 16 divisors (see below), whose sum is σ = 38431680. Its totient is φ = 16879536.

The previous prime is 25630261. The next prime is 25630333. The reversal of 25630317 is 71303652.

It is a happy number.

25630317 is a `hidden beast` number, since 25 + 630 + 3 + 1 + 7 = 666.

It is not a de Polignac number, because 25630317 - 2⁸ = 25630061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25630337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3478 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (2401980).

Almost surely, 2^25630317 is an apocalyptic number.

25630317 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

25630317 is a deficient number, since it is larger than the sum of its proper divisors (12801363).

25630317 is a wasteful number, since it uses less digits than its factorization.

25630317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11529 (or 11523 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 25630317 is about 5062.6393314160. The cubic root of 25630317 is about 294.8388164772.

Adding to 25630317 its reverse (71303652), we get a palindrome (96933969).

The spelling of 25630317 in words is "twenty-five million, six hundred thirty thousand, three hundred seventeen".