725762574889 has 9 divisors (see below), whose sum is σ = 797749329181. Its totient is φ = 659775639820.

The previous prime is 725762574881. The next prime is 725762574983. The reversal of 725762574889 is 988475267527.

The square root of 725762574889 is 851917.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 725762574889 - 2³ = 725762574881 is a prime.

It is a super-2 number, since 2×725762574889² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725762574881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9332364 + ... + 9409810.

Almost surely, 2^725762574889 is an apocalyptic number.

725762574889 is the 851917-th square number.

725762574889 is the 425959-th centered octagonal number.

It is an amenable number.

725762574889 is a deficient number, since it is larger than the sum of its proper divisors (71986754292).

725762574889 is an frugal number, since it uses more digits than its factorization.

725762574889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154916 (or 77458 counting only the distinct ones).

The product of its digits is 474163200, while the sum is 70.

The spelling of 725762574889 in words is "seven hundred twenty-five billion, seven hundred sixty-two million, five hundred seventy-four thousand, eight hundred eighty-nine".