725079669 has 24 divisors (see below), whose sum is σ = 1032243072. Its totient is φ = 452485440.

The previous prime is 725079659. The next prime is 725079709. The reversal of 725079669 is 966970527.

It is not a de Polignac number, because 725079669 - 2⁵ = 725079637 is a prime.

It is a super-2 number, since 2×725079669² = 1051481052794299122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725079659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69729 + ... + 79449.

It is an arithmetic number, because the mean of its divisors is an integer number (43010128).

Almost surely, 2^725079669 is an apocalyptic number.

It is an amenable number.

725079669 is a deficient number, since it is larger than the sum of its proper divisors (307163403).

725079669 is a wasteful number, since it uses less digits than its factorization.

725079669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9817 (or 9794 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 51.

The square root of 725079669 is about 26927.3034112219. The cubic root of 725079669 is about 898.3837944431.

The spelling of 725079669 in words is "seven hundred twenty-five million, seventy-nine thousand, six hundred sixty-nine".