725581677 has 8 divisors (see below), whose sum is σ = 977021280. Its totient is φ = 478931600.

The previous prime is 725581673. The next prime is 725581679. The reversal of 725581677 is 776185527.

It is a happy number.

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 725581677 - 2² = 725581673 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725581673) 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, 1197027 + ... + 1197632.

It is an arithmetic number, because the mean of its divisors is an integer number (122127660).

Almost surely, 2^725581677 is an apocalyptic number.

It is an amenable number.

725581677 is a deficient number, since it is larger than the sum of its proper divisors (251439603).

725581677 is a wasteful number, since it uses less digits than its factorization.

725581677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394763.

The product of its digits is 823200, while the sum is 48.

The square root of 725581677 is about 26936.6233407233. The cubic root of 725581677 is about 898.5910782442.

The spelling of 725581677 in words is "seven hundred twenty-five million, five hundred eighty-one thousand, six hundred seventy-seven".