725428786478 has 16 divisors (see below), whose sum is σ = 1187207429040. Its totient is φ = 329700873600.

The previous prime is 725428786477. The next prime is 725428786573. The reversal of 725428786478 is 874687824527.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725428786477) 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, 1785893 + ... + 2154128.

It is an arithmetic number, because the mean of its divisors is an integer number (74200464315).

Almost surely, 2^725428786478 is an apocalyptic number.

725428786478 is a deficient number, since it is larger than the sum of its proper divisors (461778642562).

725428786478 is a wasteful number, since it uses less digits than its factorization.

725428786478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948403.

The product of its digits is 337182720, while the sum is 68.

The spelling of 725428786478 in words is "seven hundred twenty-five billion, four hundred twenty-eight million, seven hundred eighty-six thousand, four hundred seventy-eight".