725457654 has 16 divisors (see below), whose sum is σ = 1612128240. Its totient is φ = 241819200.

The previous prime is 725457653. The next prime is 725457659. The reversal of 725457654 is 456754527.

725457654 is a `hidden beast` number, since 7 + 25 + 4 + 576 + 54 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725457653) 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 7 ways as a sum of consecutive naturals, for example, 6717147 + ... + 6717254.

It is an arithmetic number, because the mean of its divisors is an integer number (100758015).

Almost surely, 2^725457654 is an apocalyptic number.

725457654 is an abundant number, since it is smaller than the sum of its proper divisors (886670586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

725457654 is a wasteful number, since it uses less digits than its factorization.

725457654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13434412 (or 13434406 counting only the distinct ones).

The product of its digits is 1176000, while the sum is 45.

The square root of 725457654 is about 26934.3211163749. The cubic root of 725457654 is about 898.5398768816.

The spelling of 725457654 in words is "seven hundred twenty-five million, four hundred fifty-seven thousand, six hundred fifty-four".