25607513 has 2 divisors, whose sum is σ = 25607514. Its totient is φ = 25607512.

The previous prime is 25607503. The next prime is 25607537. The reversal of 25607513 is 31570652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24631369 + 976144 = 4963^2 + 988^2 .

It is a cyclic number.

It is not a de Polignac number, because 25607513 - 2¹⁶ = 25541977 is a prime.

It is not a weakly prime, because it can be changed into another prime (25607503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12803756 + 12803757.

It is an arithmetic number, because the mean of its divisors is an integer number (12803757).

Almost surely, 2^25607513 is an apocalyptic number.

It is an amenable number.

25607513 is a deficient number, since it is larger than the sum of its proper divisors (1).

25607513 is an equidigital number, since it uses as much as digits as its factorization.

25607513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 25607513 is about 5060.3866453069. The cubic root of 25607513 is about 294.7513484553.

The spelling of 25607513 in words is "twenty-five million, six hundred seven thousand, five hundred thirteen".