725684457 has 8 divisors (see below), whose sum is σ = 1024495776. Its totient is φ = 455331392.

The previous prime is 725684419. The next prime is 725684473. The reversal of 725684457 is 754486527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725684457 - 2¹⁶ = 725618921 is a prime.

It is a super-2 number, since 2×725684457² = 1053235862262769698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (725684497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7114503 + ... + 7114604.

It is an arithmetic number, because the mean of its divisors is an integer number (128061972).

Almost surely, 2^725684457 is an apocalyptic number.

It is an amenable number.

725684457 is a deficient number, since it is larger than the sum of its proper divisors (298811319).

725684457 is a wasteful number, since it uses less digits than its factorization.

725684457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14229127.

The product of its digits is 1881600, while the sum is 48.

The square root of 725684457 is about 26938.5310846750. The cubic root of 725684457 is about 898.6335052759.

The spelling of 725684457 in words is "seven hundred twenty-five million, six hundred eighty-four thousand, four hundred fifty-seven".