725324836669 has 2 divisors, whose sum is σ = 725324836670. Its totient is φ = 725324836668.

The previous prime is 725324836661. The next prime is 725324836679. The reversal of 725324836669 is 966638423527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 483518576025 + 241806260644 = 695355^2 + 491738^2 .

It is a cyclic number.

It is not a de Polignac number, because 725324836669 - 2³ = 725324836661 is a prime.

It is a super-2 number, since 2×725324836669² (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 (725324836661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362662418334 + 362662418335.

It is an arithmetic number, because the mean of its divisors is an integer number (362662418335).

Almost surely, 2^725324836669 is an apocalyptic number.

It is an amenable number.

725324836669 is a deficient number, since it is larger than the sum of its proper divisors (1).

725324836669 is an equidigital number, since it uses as much as digits as its factorization.

725324836669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 61.

The spelling of 725324836669 in words is "seven hundred twenty-five billion, three hundred twenty-four million, eight hundred thirty-six thousand, six hundred sixty-nine".