725189490 has 32 divisors (see below), whose sum is σ = 1933839360. Its totient is φ = 193383792.

The previous prime is 725189483. The next prime is 725189501. The reversal of 725189490 is 94981527.

725189490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1342674 + ... + 1343213.

It is an arithmetic number, because the mean of its divisors is an integer number (60432480).

Almost surely, 2^725189490 is an apocalyptic number.

725189490 is an abundant number, since it is smaller than the sum of its proper divisors (1208649870).

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

725189490 is a wasteful number, since it uses less digits than its factorization.

725189490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2685903 (or 2685897 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 725189490 is about 26929.3425467463. The cubic root of 725189490 is about 898.4291487355.

The spelling of 725189490 in words is "seven hundred twenty-five million, one hundred eighty-nine thousand, four hundred ninety".