25135687 has 2 divisors, whose sum is σ = 25135688. Its totient is φ = 25135686.

The previous prime is 25135681. The next prime is 25135703. The reversal of 25135687 is 78653152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25135687 - 2³ = 25135679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25135681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567843 + 12567844.

It is an arithmetic number, because the mean of its divisors is an integer number (12567844).

Almost surely, 2^25135687 is an apocalyptic number.

25135687 is a deficient number, since it is larger than the sum of its proper divisors (1).

25135687 is an equidigital number, since it uses as much as digits as its factorization.

25135687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 37.

The square root of 25135687 is about 5013.5503388318. The cubic root of 25135687 is about 292.9298212412.

The spelling of 25135687 in words is "twenty-five million, one hundred thirty-five thousand, six hundred eighty-seven".