625437313 has 8 divisors (see below), whose sum is σ = 632471400. Its totient is φ = 618427008.

The previous prime is 625437301. The next prime is 625437341. The reversal of 625437313 is 313734526.

It can be written as a sum of positive squares in 4 ways, for example, as 161594944 + 463842369 = 12712^2 + 21537^2 .

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 625437313 - 2²¹ = 623340161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (625437353) 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 7 ways as a sum of consecutive naturals, for example, 49845 + ... + 61117.

It is an arithmetic number, because the mean of its divisors is an integer number (79058925).

Almost surely, 2^625437313 is an apocalyptic number.

It is an amenable number.

625437313 is a deficient number, since it is larger than the sum of its proper divisors (7034087).

625437313 is a wasteful number, since it uses less digits than its factorization.

625437313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11891.

The product of its digits is 45360, while the sum is 34.

The square root of 625437313 is about 25008.7447305937. The cubic root of 625437313 is about 855.1873387698.

The spelling of 625437313 in words is "six hundred twenty-five million, four hundred thirty-seven thousand, three hundred thirteen".