25507039 has 2 divisors, whose sum is σ = 25507040. Its totient is φ = 25507038.

The previous prime is 25507033. The next prime is 25507049. The reversal of 25507039 is 93070552.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25507039 - 2⁵ = 25507007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25507039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25507033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12753519 + 12753520.

It is an arithmetic number, because the mean of its divisors is an integer number (12753520).

Almost surely, 2^25507039 is an apocalyptic number.

25507039 is a deficient number, since it is larger than the sum of its proper divisors (1).

25507039 is an equidigital number, since it uses as much as digits as its factorization.

25507039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 31.

The square root of 25507039 is about 5050.4493859458. The cubic root of 25507039 is about 294.3653463206.

The spelling of 25507039 in words is "twenty-five million, five hundred seven thousand, thirty-nine".