725501631 has 8 divisors (see below), whose sum is σ = 969749424. Its totient is φ = 482460800.

The previous prime is 725501629. The next prime is 725501641. The reversal of 725501631 is 136105527.

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 725501631 - 2¹ = 725501629 is a prime.

It is a super-2 number, since 2×725501631² = 1052705233167320322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (725501611) 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, 300336 + ... + 302741.

It is an arithmetic number, because the mean of its divisors is an integer number (121218678).

Almost surely, 2^725501631 is an apocalyptic number.

725501631 is a deficient number, since it is larger than the sum of its proper divisors (244247793).

725501631 is a wasteful number, since it uses less digits than its factorization.

725501631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603481.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 725501631 is about 26935.1374787655. The cubic root of 725501631 is about 898.5580329102.

The spelling of 725501631 in words is "seven hundred twenty-five million, five hundred one thousand, six hundred thirty-one".