625521703 has 2 divisors, whose sum is σ = 625521704. Its totient is φ = 625521702.

The previous prime is 625521691. The next prime is 625521709. The reversal of 625521703 is 307125526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 625521703 - 2⁵ = 625521671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625521709) 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 as a sum of consecutive naturals, namely, 312760851 + 312760852.

It is an arithmetic number, because the mean of its divisors is an integer number (312760852).

Almost surely, 2^625521703 is an apocalyptic number.

625521703 is a deficient number, since it is larger than the sum of its proper divisors (1).

625521703 is an equidigital number, since it uses as much as digits as its factorization.

625521703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 625521703 is about 25010.4318835161. The cubic root of 625521703 is about 855.2258003989.

The spelling of 625521703 in words is "six hundred twenty-five million, five hundred twenty-one thousand, seven hundred three".