625631003 has 2 divisors, whose sum is σ = 625631004. Its totient is φ = 625631002.

The previous prime is 625630997. The next prime is 625631047. The reversal of 625631003 is 300136526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625631003 - 2²⁴ = 608853787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (625631063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312815501 + 312815502.

It is an arithmetic number, because the mean of its divisors is an integer number (312815502).

Almost surely, 2^625631003 is an apocalyptic number.

625631003 is a deficient number, since it is larger than the sum of its proper divisors (1).

625631003 is an equidigital number, since it uses as much as digits as its factorization.

625631003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 625631003 is about 25012.6168762887. The cubic root of 625631003 is about 855.2756098809.

Adding to 625631003 its reverse (300136526), we get a palindrome (925767529).

The spelling of 625631003 in words is "six hundred twenty-five million, six hundred thirty-one thousand, three".