25522631 has 2 divisors, whose sum is σ = 25522632. Its totient is φ = 25522630.

The previous prime is 25522589. The next prime is 25522649. The reversal of 25522631 is 13622552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25522631 - 2²² = 21328327 is a prime.

It is a super-2 number, since 2×25522631² = 1302809386324322, 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 25522631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25522691) 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 as a sum of consecutive naturals, namely, 12761315 + 12761316.

It is an arithmetic number, because the mean of its divisors is an integer number (12761316).

Almost surely, 2^25522631 is an apocalyptic number.

25522631 is a deficient number, since it is larger than the sum of its proper divisors (1).

25522631 is an equidigital number, since it uses as much as digits as its factorization.

25522631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 26.

The square root of 25522631 is about 5051.9927751334. The cubic root of 25522631 is about 294.4253142061.

The spelling of 25522631 in words is "twenty-five million, five hundred twenty-two thousand, six hundred thirty-one".