571720625 has 40 divisors (see below), whose sum is σ = 864623232. Its totient is φ = 368928000.

The previous prime is 571720607. The next prime is 571720627. The reversal of 571720625 is 526027175.

It is a happy number.

It is not a de Polignac number, because 571720625 - 2¹² = 571716529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (571720627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 70532 + ... + 78218.

Almost surely, 2^571720625 is an apocalyptic number.

It is an amenable number.

571720625 is a deficient number, since it is larger than the sum of its proper divisors (292902607).

571720625 is an equidigital number, since it uses as much as digits as its factorization.

571720625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7731 (or 7716 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 571720625 is about 23910.6801450732. The cubic root of 571720625 is about 829.9678823397.

The spelling of 571720625 in words is "five hundred seventy-one million, seven hundred twenty thousand, six hundred twenty-five".