725221542 has 16 divisors (see below), whose sum is σ = 1451011392. Its totient is φ = 241645800.

The previous prime is 725221537. The next prime is 725221561. The reversal of 725221542 is 245122527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6084 + ... + 38567.

It is an arithmetic number, because the mean of its divisors is an integer number (90688212).

Almost surely, 2^725221542 is an apocalyptic number.

725221542 is an abundant number, since it is smaller than the sum of its proper divisors (725789850).

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

725221542 is a wasteful number, since it uses less digits than its factorization.

725221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47363.

The product of its digits is 11200, while the sum is 30.

The square root of 725221542 is about 26929.9376531027. The cubic root of 725221542 is about 898.4423848286.

The spelling of 725221542 in words is "seven hundred twenty-five million, two hundred twenty-one thousand, five hundred forty-two".