725166801775 has 24 divisors (see below), whose sum is σ = 971822893104. Its totient is φ = 533602003200.

The previous prime is 725166801773. The next prime is 725166801791. The reversal of 725166801775 is 577108661527.

It is not a de Polignac number, because 725166801775 - 2¹ = 725166801773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725166801773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3878929 + ... + 4061578.

It is an arithmetic number, because the mean of its divisors is an integer number (40492620546).

Almost surely, 2^725166801775 is an apocalyptic number.

725166801775 is a deficient number, since it is larger than the sum of its proper divisors (246656091329).

725166801775 is a wasteful number, since it uses less digits than its factorization.

725166801775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7940811 (or 7940806 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 55.

The spelling of 725166801775 in words is "seven hundred twenty-five billion, one hundred sixty-six million, eight hundred one thousand, seven hundred seventy-five".