25548631 has 2 divisors, whose sum is σ = 25548632. Its totient is φ = 25548630.

The previous prime is 25548629. The next prime is 25548647. The reversal of 25548631 is 13684552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25548631 - 2¹ = 25548629 is a prime.

It is a super-2 number, since 2×25548631² = 1305465091948322, which contains 22 as substring.

Together with 25548629, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25548661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12774315 + 12774316.

It is an arithmetic number, because the mean of its divisors is an integer number (12774316).

Almost surely, 2^25548631 is an apocalyptic number.

25548631 is a deficient number, since it is larger than the sum of its proper divisors (1).

25548631 is an equidigital number, since it uses as much as digits as its factorization.

25548631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 25548631 is about 5054.5653621256. The cubic root of 25548631 is about 294.5252576671.

The spelling of 25548631 in words is "twenty-five million, five hundred forty-eight thousand, six hundred thirty-one".