725350857391 has 2 divisors, whose sum is σ = 725350857392. Its totient is φ = 725350857390.

The previous prime is 725350857317. The next prime is 725350857401. The reversal of 725350857391 is 193758053527.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725350857391 is a prime.

It is a super-2 number, since 2×725350857391² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (725350857311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362675428695 + 362675428696.

It is an arithmetic number, because the mean of its divisors is an integer number (362675428696).

Almost surely, 2^725350857391 is an apocalyptic number.

725350857391 is a deficient number, since it is larger than the sum of its proper divisors (1).

725350857391 is an equidigital number, since it uses as much as digits as its factorization.

725350857391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938000, while the sum is 55.

The spelling of 725350857391 in words is "seven hundred twenty-five billion, three hundred fifty million, eight hundred fifty-seven thousand, three hundred ninety-one".