725474756540 has 24 divisors (see below), whose sum is σ = 1524062826720. Its totient is φ = 290082123968.

The previous prime is 725474756521. The next prime is 725474756609. The reversal of 725474756540 is 45657474527.

It is a happy number.

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, 6680960 + ... + 6788679.

It is an arithmetic number, because the mean of its divisors is an integer number (63502617780).

Almost surely, 2^725474756540 is an apocalyptic number.

It is an amenable number.

725474756540 is an abundant number, since it is smaller than the sum of its proper divisors (798588070180).

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

725474756540 is a wasteful number, since it uses less digits than its factorization.

725474756540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13472341 (or 13472339 counting only the distinct ones).

The product of its (nonzero) digits is 32928000, while the sum is 56.

The spelling of 725474756540 in words is "seven hundred twenty-five billion, four hundred seventy-four million, seven hundred fifty-six thousand, five hundred forty".