25935979 has 2 divisors, whose sum is σ = 25935980. Its totient is φ = 25935978.

The previous prime is 25935971. The next prime is 25935991. The reversal of 25935979 is 97953952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25935979 - 2³ = 25935971 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25935971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12967989 + 12967990.

It is an arithmetic number, because the mean of its divisors is an integer number (12967990).

Almost surely, 2^25935979 is an apocalyptic number.

25935979 is a deficient number, since it is larger than the sum of its proper divisors (1).

25935979 is an equidigital number, since it uses as much as digits as its factorization.

25935979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 765450, while the sum is 49.

The square root of 25935979 is about 5092.7378687696. The cubic root of 25935979 is about 296.0062506289.

The spelling of 25935979 in words is "twenty-five million, nine hundred thirty-five thousand, nine hundred seventy-nine".