25415152613 has 2 divisors, whose sum is σ = 25415152614. Its totient is φ = 25415152612.

The previous prime is 25415152597. The next prime is 25415152639. The reversal of 25415152613 is 31625151452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24756819649 + 658332964 = 157343^2 + 25658^2 .

It is a cyclic number.

It is not a de Polignac number, because 25415152613 - 2⁴ = 25415152597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25415752613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12707576306 + 12707576307.

It is an arithmetic number, because the mean of its divisors is an integer number (12707576307).

Almost surely, 2^25415152613 is an apocalyptic number.

It is an amenable number.

25415152613 is a deficient number, since it is larger than the sum of its proper divisors (1).

25415152613 is an equidigital number, since it uses as much as digits as its factorization.

25415152613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 35.

The spelling of 25415152613 in words is "twenty-five billion, four hundred fifteen million, one hundred fifty-two thousand, six hundred thirteen".