725946569 has 2 divisors, whose sum is σ = 725946570. Its totient is φ = 725946568.

The previous prime is 725946527. The next prime is 725946581. The reversal of 725946569 is 965649527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 488940544 + 237006025 = 22112^2 + 15395^2 .

It is a cyclic number.

It is not a de Polignac number, because 725946569 - 2²⁰ = 724897993 is a prime.

It is a super-2 number, since 2×725946569² = 1053996842085743522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 725946569.

It is not a weakly prime, because it can be changed into another prime (725946269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 362973284 + 362973285.

It is an arithmetic number, because the mean of its divisors is an integer number (362973285).

Almost surely, 2^725946569 is an apocalyptic number.

It is an amenable number.

725946569 is a deficient number, since it is larger than the sum of its proper divisors (1).

725946569 is an equidigital number, since it uses as much as digits as its factorization.

725946569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 53.

The square root of 725946569 is about 26943.3956471711. The cubic root of 725946569 is about 898.7416855693.

The spelling of 725946569 in words is "seven hundred twenty-five million, nine hundred forty-six thousand, five hundred sixty-nine".