25367939 has 2 divisors, whose sum is σ = 25367940. Its totient is φ = 25367938.

The previous prime is 25367929. The next prime is 25367941. The reversal of 25367939 is 93976352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25367939 - 2²⁰ = 24319363 is a prime.

It is a Sophie Germain prime.

Together with 25367941, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25367939.

It is not a weakly prime, because it can be changed into another prime (25367929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12683969 + 12683970.

It is an arithmetic number, because the mean of its divisors is an integer number (12683970).

Almost surely, 2^25367939 is an apocalyptic number.

25367939 is a deficient number, since it is larger than the sum of its proper divisors (1).

25367939 is an equidigital number, since it uses as much as digits as its factorization.

25367939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 44.

The square root of 25367939 is about 5036.6595080470. The cubic root of 25367939 is about 293.8292736703.

The spelling of 25367939 in words is "twenty-five million, three hundred sixty-seven thousand, nine hundred thirty-nine".