725647644490 has 16 divisors (see below), whose sum is σ = 1309141088640. Its totient is φ = 289597873680.

The previous prime is 725647644487. The next prime is 725647644493. The reversal of 725647644490 is 94446746527.

It is an interprime number because it is at equal distance from previous prime (725647644487) and next prime (725647644493).

It is not an unprimeable number, because it can be changed into a prime (725647644493) 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, 82643406 + ... + 82652185.

It is an arithmetic number, because the mean of its divisors is an integer number (81821318040).

Almost surely, 2^725647644490 is an apocalyptic number.

725647644490 is a deficient number, since it is larger than the sum of its proper divisors (583493444150).

725647644490 is a wasteful number, since it uses less digits than its factorization.

725647644490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165296037.

The product of its (nonzero) digits is 40642560, while the sum is 58.

The spelling of 725647644490 in words is "seven hundred twenty-five billion, six hundred forty-seven million, six hundred forty-four thousand, four hundred ninety".