625216903 has 2 divisors, whose sum is σ = 625216904. Its totient is φ = 625216902.

The previous prime is 625216873. The next prime is 625216987. The reversal of 625216903 is 309612526.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 625216903 - 2¹⁷ = 625085831 is a prime.

It is a super-2 number, since 2×625216903² = 781792351593822818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (625213903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312608451 + 312608452.

It is an arithmetic number, because the mean of its divisors is an integer number (312608452).

Almost surely, 2^625216903 is an apocalyptic number.

625216903 is a deficient number, since it is larger than the sum of its proper divisors (1).

625216903 is an equidigital number, since it uses as much as digits as its factorization.

625216903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 625216903 is about 25004.3376836900. The cubic root of 625216903 is about 855.0868682756.

The spelling of 625216903 in words is "six hundred twenty-five million, two hundred sixteen thousand, nine hundred three".