25634087 has 2 divisors, whose sum is σ = 25634088. Its totient is φ = 25634086.

The previous prime is 25634071. The next prime is 25634099. The reversal of 25634087 is 78043652.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25634087 - 2⁴ = 25634071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25634017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12817043 + 12817044.

It is an arithmetic number, because the mean of its divisors is an integer number (12817044).

Almost surely, 2^25634087 is an apocalyptic number.

25634087 is a deficient number, since it is larger than the sum of its proper divisors (1).

25634087 is an equidigital number, since it uses as much as digits as its factorization.

25634087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 25634087 is about 5063.0116531566. The cubic root of 25634087 is about 294.8532718562.

It can be divided in two parts, 256 and 34087, that added together give a palindrome (34343).

The spelling of 25634087 in words is "twenty-five million, six hundred thirty-four thousand, eighty-seven".