625647353 has 6 divisors (see below), whose sum is σ = 630509166. Its totient is φ = 620789952.

The previous prime is 625647349. The next prime is 625647361. The reversal of 625647353 is 353746526.

It can be written as a sum of positive squares in 3 ways, for example, as 11202409 + 614444944 = 3347^2 + 24788^2 .

It is not a de Polignac number, because 625647353 - 2² = 625647349 is a prime.

It is a super-2 number, since 2×625647353² = 782869220631813218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625647353.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625647313) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 291701 + ... + 293837.

It is an arithmetic number, because the mean of its divisors is an integer number (105084861).

Almost surely, 2^625647353 is an apocalyptic number.

It is an amenable number.

625647353 is a deficient number, since it is larger than the sum of its proper divisors (4861813).

625647353 is an frugal number, since it uses more digits than its factorization.

625647353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4411 (or 2274 counting only the distinct ones).

The product of its digits is 453600, while the sum is 41.

The square root of 625647353 is about 25012.9437092078. The cubic root of 625647353 is about 855.2830602973.

It can be divided in two parts, 6256473 and 53, that added together give a palindrome (6256526).

The spelling of 625647353 in words is "six hundred twenty-five million, six hundred forty-seven thousand, three hundred fifty-three".