25025939 has 2 divisors, whose sum is σ = 25025940. Its totient is φ = 25025938.

The previous prime is 25025899. The next prime is 25025941. The reversal of 25025939 is 93952052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25025939 - 2²⁰ = 23977363 is a prime.

It is a Sophie Germain prime.

Together with 25025941, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25025899 and 25025908.

It is not a weakly prime, because it can be changed into another prime (25025969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12512969 + 12512970.

It is an arithmetic number, because the mean of its divisors is an integer number (12512970).

Almost surely, 2^25025939 is an apocalyptic number.

25025939 is a deficient number, since it is larger than the sum of its proper divisors (1).

25025939 is an equidigital number, since it uses as much as digits as its factorization.

25025939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 25025939 is about 5002.5932275171. The cubic root of 25025939 is about 292.5028669941.

The spelling of 25025939 in words is "twenty-five million, twenty-five thousand, nine hundred thirty-nine".