25130536513639 has 2 divisors, whose sum is σ = 25130536513640. Its totient is φ = 25130536513638.

The previous prime is 25130536513601. The next prime is 25130536513669. The reversal of 25130536513639 is 93631563503152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25130536513639 - 2⁹ = 25130536513127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25130536513669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565268256819 + 12565268256820.

It is an arithmetic number, because the mean of its divisors is an integer number (12565268256820).

Almost surely, 2^{25130536513639} is an apocalyptic number.

25130536513639 is a deficient number, since it is larger than the sum of its proper divisors (1).

25130536513639 is an equidigital number, since it uses as much as digits as its factorization.

25130536513639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561000, while the sum is 52.

The spelling of 25130536513639 in words is "twenty-five trillion, one hundred thirty billion, five hundred thirty-six million, five hundred thirteen thousand, six hundred thirty-nine".