725573457 has 48 divisors (see below), whose sum is σ = 1249597440. Its totient is φ = 412124112.

The previous prime is 725573449. The next prime is 725573489. The reversal of 725573457 is 754375527.

725573457 is a `hidden beast` number, since 7 + 25 + 573 + 4 + 57 = 666.

It is not a de Polignac number, because 725573457 - 2³ = 725573449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (725573857) 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 47 ways as a sum of consecutive naturals, for example, 303288 + ... + 305670.

It is an arithmetic number, because the mean of its divisors is an integer number (26033280).

Almost surely, 2^725573457 is an apocalyptic number.

It is an amenable number.

725573457 is a deficient number, since it is larger than the sum of its proper divisors (524023983).

725573457 is a wasteful number, since it uses less digits than its factorization.

725573457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2584 (or 2572 counting only the distinct ones).

The product of its digits is 1029000, while the sum is 45.

The square root of 725573457 is about 26936.4707599195. The cubic root of 725573457 is about 898.5876848993.

The spelling of 725573457 in words is "seven hundred twenty-five million, five hundred seventy-three thousand, four hundred fifty-seven".