725227524 has 36 divisors (see below), whose sum is σ = 2095102464. Its totient is φ = 207207792.

The previous prime is 725227493. The next prime is 725227537. The reversal of 725227524 is 425722527.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1438692 + ... + 1439195.

Almost surely, 2^725227524 is an apocalyptic number.

It is an amenable number.

725227524 is an abundant number, since it is smaller than the sum of its proper divisors (1369874940).

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

725227524 is a wasteful number, since it uses less digits than its factorization.

725227524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877904 (or 2877899 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 725227524 is about 26930.0487188568. The cubic root of 725227524 is about 898.4448550933. Note that the first 3 decimals are identical.

The spelling of 725227524 in words is "seven hundred twenty-five million, two hundred twenty-seven thousand, five hundred twenty-four".