725157969139 has 2 divisors, whose sum is σ = 725157969140. Its totient is φ = 725157969138.

The previous prime is 725157969097. The next prime is 725157969169. The reversal of 725157969139 is 931969751527.

It is a strong prime.

It is an emirp because it is prime and its reverse (931969751527) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 725157969139 - 2²³ = 725149580531 is a prime.

It is not a weakly prime, because it can be changed into another prime (725157969169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362578984569 + 362578984570.

It is an arithmetic number, because the mean of its divisors is an integer number (362578984570).

Almost surely, 2^725157969139 is an apocalyptic number.

725157969139 is a deficient number, since it is larger than the sum of its proper divisors (1).

725157969139 is an equidigital number, since it uses as much as digits as its factorization.

725157969139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32148900, while the sum is 64.

The spelling of 725157969139 in words is "seven hundred twenty-five billion, one hundred fifty-seven million, nine hundred sixty-nine thousand, one hundred thirty-nine".