725221347740 has 96 divisors (see below), whose sum is σ = 1579646745600. Its totient is φ = 279548755200.

The previous prime is 725221347703. The next prime is 725221347769. The reversal of 725221347740 is 47743122527.

It is a happy number.

725221347740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 725221347691 and 725221347700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11507315 + ... + 11570165.

It is an arithmetic number, because the mean of its divisors is an integer number (16454653600).

Almost surely, 2^725221347740 is an apocalyptic number.

It is an amenable number.

725221347740 is an abundant number, since it is smaller than the sum of its proper divisors (854425397860).

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

725221347740 is a wasteful number, since it uses less digits than its factorization.

725221347740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63115 (or 63113 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 44.

The spelling of 725221347740 in words is "seven hundred twenty-five billion, two hundred twenty-one million, three hundred forty-seven thousand, seven hundred forty".