731437725 has 12 divisors (see below), whose sum is σ = 1209310496. Its totient is φ = 390100080.

The previous prime is 731437687. The next prime is 731437757. The reversal of 731437725 is 527734137.

It is not a de Polignac number, because 731437725 - 2¹² = 731433629 is a prime.

It is a super-2 number, since 2×731437725² = 1070002291106351250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4876177 + ... + 4876326.

Almost surely, 2^731437725 is an apocalyptic number.

731437725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

731437725 is a deficient number, since it is larger than the sum of its proper divisors (477872771).

731437725 is a wasteful number, since it uses less digits than its factorization.

731437725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9752516 (or 9752511 counting only the distinct ones).

The product of its digits is 123480, while the sum is 39.

The square root of 731437725 is about 27045.1053797170. The cubic root of 731437725 is about 901.0020628982.

The spelling of 731437725 in words is "seven hundred thirty-one million, four hundred thirty-seven thousand, seven hundred twenty-five".