25515713 has 2 divisors, whose sum is σ = 25515714. Its totient is φ = 25515712.

The previous prime is 25515619. The next prime is 25515757. The reversal of 25515713 is 31751552.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14010049 + 11505664 = 3743^2 + 3392^2 .

It is a cyclic number.

It is not a de Polignac number, because 25515713 - 2¹⁰ = 25514689 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25512713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12757856 + 12757857.

It is an arithmetic number, because the mean of its divisors is an integer number (12757857).

Almost surely, 2^25515713 is an apocalyptic number.

It is an amenable number.

25515713 is a deficient number, since it is larger than the sum of its proper divisors (1).

25515713 is an equidigital number, since it uses as much as digits as its factorization.

25515713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5250, while the sum is 29.

The square root of 25515713 is about 5051.3080484168. The cubic root of 25515713 is about 294.3987101257.

The spelling of 25515713 in words is "twenty-five million, five hundred fifteen thousand, seven hundred thirteen".