25650631 has 2 divisors, whose sum is σ = 25650632. Its totient is φ = 25650630.

The previous prime is 25650623. The next prime is 25650641. The reversal of 25650631 is 13605652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25650631 - 2³ = 25650623 is a prime.

It is a super-2 number, since 2×25650631² = 1315909741396322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25650631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25650641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12825315 + 12825316.

It is an arithmetic number, because the mean of its divisors is an integer number (12825316).

Almost surely, 2^25650631 is an apocalyptic number.

25650631 is a deficient number, since it is larger than the sum of its proper divisors (1).

25650631 is an equidigital number, since it uses as much as digits as its factorization.

25650631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 25650631 is about 5064.6451998141. The cubic root of 25650631 is about 294.9166900630.

The spelling of 25650631 in words is "twenty-five million, six hundred fifty thousand, six hundred thirty-one".