725441631 has 8 divisors (see below), whose sum is σ = 967933440. Its totient is φ = 483288792.

The previous prime is 725441611. The next prime is 725441693. The reversal of 725441631 is 136144527.

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

It is not a de Polignac number, because 725441631 - 2¹³ = 725433439 is a prime.

It is a super-2 number, since 2×725441631² = 1052531119975880322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 725441592 and 725441601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725441611) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 79705 + ... + 88338.

It is an arithmetic number, because the mean of its divisors is an integer number (120991680).

Almost surely, 2^725441631 is an apocalyptic number.

725441631 is a deficient number, since it is larger than the sum of its proper divisors (242491809).

725441631 is a wasteful number, since it uses less digits than its factorization.

725441631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169485.

The product of its digits is 20160, while the sum is 33.

The square root of 725441631 is about 26934.0236689582. The cubic root of 725441631 is about 898.5332615584.

The spelling of 725441631 in words is "seven hundred twenty-five million, four hundred forty-one thousand, six hundred thirty-one".