725473405 has 16 divisors (see below), whose sum is σ = 883728000. Its totient is φ = 571665600.

The previous prime is 725473361. The next prime is 725473451. The reversal of 725473405 is 504374527.

It is a happy number.

It is not a de Polignac number, because 725473405 - 2⁷ = 725473277 is a prime.

It is a super-2 number, since 2×725473405² = 1052623322724588050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 96886 + ... + 104104.

It is an arithmetic number, because the mean of its divisors is an integer number (55233000).

Almost surely, 2^725473405 is an apocalyptic number.

It is an amenable number.

725473405 is a deficient number, since it is larger than the sum of its proper divisors (158254595).

725473405 is a wasteful number, since it uses less digits than its factorization.

725473405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7524.

The product of its (nonzero) digits is 117600, while the sum is 37.

The square root of 725473405 is about 26934.6135112424. The cubic root of 725473405 is about 898.5463798107.

The spelling of 725473405 in words is "seven hundred twenty-five million, four hundred seventy-three thousand, four hundred five".