725180581 has 8 divisors (see below), whose sum is σ = 774100800. Its totient is φ = 677335680.

The previous prime is 725180563. The next prime is 725180629. The reversal of 725180581 is 185081527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 725180581 - 2⁵ = 725180549 is a prime.

It is a super-2 number, since 2×725180581² = 1051773750118995122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 725180581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725180081) 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, 267436 + ... + 270133.

It is an arithmetic number, because the mean of its divisors is an integer number (96762600).

Almost surely, 2^725180581 is an apocalyptic number.

725180581 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

725180581 is a deficient number, since it is larger than the sum of its proper divisors (48920219).

725180581 is a wasteful number, since it uses less digits than its factorization.

725180581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537659.

The product of its (nonzero) digits is 22400, while the sum is 37.

The square root of 725180581 is about 26929.1771318769. The cubic root of 725180581 is about 898.4254696336.

The spelling of 725180581 in words is "seven hundred twenty-five million, one hundred eighty thousand, five hundred eighty-one".