725537403654 has 16 divisors (see below), whose sum is σ = 1658371208448. Its totient is φ = 207296401032.

The previous prime is 725537403649. The next prime is 725537403667. The reversal of 725537403654 is 456304735527.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 725537403597 and 725537403606.

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 7 ways as a sum of consecutive naturals, for example, 8637350002 + ... + 8637350085.

It is an arithmetic number, because the mean of its divisors is an integer number (103648200528).

Almost surely, 2^725537403654 is an apocalyptic number.

725537403654 is an abundant number, since it is smaller than the sum of its proper divisors (932833804794).

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

725537403654 is a wasteful number, since it uses less digits than its factorization.

725537403654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17274700099.

The product of its (nonzero) digits is 10584000, while the sum is 51.

The spelling of 725537403654 in words is "seven hundred twenty-five billion, five hundred thirty-seven million, four hundred three thousand, six hundred fifty-four".