25135867 has 2 divisors, whose sum is σ = 25135868. Its totient is φ = 25135866.

The previous prime is 25135861. The next prime is 25135897. The reversal of 25135867 is 76853152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25135867 is a prime.

It is not a weakly prime, because it can be changed into another prime (25135861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12567933 + 12567934.

It is an arithmetic number, because the mean of its divisors is an integer number (12567934).

Almost surely, 2^25135867 is an apocalyptic number.

25135867 is a deficient number, since it is larger than the sum of its proper divisors (1).

25135867 is an equidigital number, since it uses as much as digits as its factorization.

25135867 is an evil number, because the sum of its binary digits is even.

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

The square root of 25135867 is about 5013.5682901502. The cubic root of 25135867 is about 292.9305204761.

The spelling of 25135867 in words is "twenty-five million, one hundred thirty-five thousand, eight hundred sixty-seven".