725457218870 has 32 divisors (see below), whose sum is σ = 1348108344576. Its totient is φ = 280788393600.

The previous prime is 725457218851. The next prime is 725457218881. The reversal of 725457218870 is 78812754527.

It is a super-3 number, since 3×725457218870³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2523752 + ... + 2796468.

It is an arithmetic number, because the mean of its divisors is an integer number (42128385768).

Almost surely, 2^725457218870 is an apocalyptic number.

725457218870 is a deficient number, since it is larger than the sum of its proper divisors (622651125706).

725457218870 is a wasteful number, since it uses less digits than its factorization.

725457218870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281336.

The product of its (nonzero) digits is 8780800, while the sum is 56.

The spelling of 725457218870 in words is "seven hundred twenty-five billion, four hundred fifty-seven million, two hundred eighteen thousand, eight hundred seventy".