25250839 has 2 divisors, whose sum is σ = 25250840. Its totient is φ = 25250838.

The previous prime is 25250809. The next prime is 25250887. The reversal of 25250839 is 93805252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25250839 - 2²³ = 16862231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25250809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12625419 + 12625420.

It is an arithmetic number, because the mean of its divisors is an integer number (12625420).

Almost surely, 2^25250839 is an apocalyptic number.

25250839 is a deficient number, since it is larger than the sum of its proper divisors (1).

25250839 is an equidigital number, since it uses as much as digits as its factorization.

25250839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 25250839 is about 5025.0212934872. The cubic root of 25250839 is about 293.3764647608.

The spelling of 25250839 in words is "twenty-five million, two hundred fifty thousand, eight hundred thirty-nine".