625983013 has 4 divisors (see below), whose sum is σ = 633016620. Its totient is φ = 618949408.

The previous prime is 625982999. The next prime is 625983023. The reversal of 625983013 is 310389526.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310389526 = 2 ⋅155194763.

It can be written as a sum of positive squares in 2 ways, for example, as 366837409 + 259145604 = 19153^2 + 16098^2 .

It is a cyclic number.

It is not a de Polignac number, because 625983013 - 2⁹ = 625982501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625983023) 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 3 ways as a sum of consecutive naturals, for example, 3516670 + ... + 3516847.

It is an arithmetic number, because the mean of its divisors is an integer number (158254155).

Almost surely, 2^625983013 is an apocalyptic number.

It is an amenable number.

625983013 is a deficient number, since it is larger than the sum of its proper divisors (7033607).

625983013 is an equidigital number, since it uses as much as digits as its factorization.

625983013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7033606.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 625983013 is about 25019.6525355569. The cubic root of 625983013 is about 855.4359861618.

The spelling of 625983013 in words is "six hundred twenty-five million, nine hundred eighty-three thousand, thirteen".