725676381 has 48 divisors (see below), whose sum is σ = 1148361600. Its totient is φ = 452904408.

The previous prime is 725676379. The next prime is 725676407. The reversal of 725676381 is 183676527.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

725676381 is a `hidden beast` number, since 7 + 2 + 5 + 6 + 7 + 638 + 1 = 666.

725676381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 725676381 - 2¹ = 725676379 is a prime.

It is a super-2 number, since 2×725676381² = 1053212419882514322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725676311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15439900 + ... + 15439946.

It is an arithmetic number, because the mean of its divisors is an integer number (23924200).

Almost surely, 2^725676381 is an apocalyptic number.

It is an amenable number.

725676381 is a deficient number, since it is larger than the sum of its proper divisors (422685219).

725676381 is an frugal number, since it uses more digits than its factorization.

725676381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 73 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 725676381 is about 26938.3811874433. The cubic root of 725676381 is about 898.6301716916.

The spelling of 725676381 in words is "seven hundred twenty-five million, six hundred seventy-six thousand, three hundred eighty-one".