725553517172 has 48 divisors (see below), whose sum is σ = 1416370717440. Its totient is φ = 322380364800.

The previous prime is 725553517163. The next prime is 725553517207. The reversal of 725553517172 is 271715355527.

It is a self number, because there is not a number n which added to its sum of digits gives 725553517172.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1456172 + ... + 1889852.

It is an arithmetic number, because the mean of its divisors is an integer number (29507723280).

Almost surely, 2^725553517172 is an apocalyptic number.

It is an amenable number.

725553517172 is a deficient number, since it is larger than the sum of its proper divisors (690817200268).

725553517172 is a wasteful number, since it uses less digits than its factorization.

725553517172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434552 (or 434550 counting only the distinct ones).

The product of its digits is 2572500, while the sum is 50.

The spelling of 725553517172 in words is "seven hundred twenty-five billion, five hundred fifty-three million, five hundred seventeen thousand, one hundred seventy-two".