6251222591 has 2 divisors, whose sum is σ = 6251222592. Its totient is φ = 6251222590.

The previous prime is 6251222503. The next prime is 6251222611. The reversal of 6251222591 is 1952221526.

6251222591 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6251222591 - 2³⁰ = 5177480767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6251222501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3125611295 + 3125611296.

It is an arithmetic number, because the mean of its divisors is an integer number (3125611296).

Almost surely, 2^6251222591 is an apocalyptic number.

6251222591 is a deficient number, since it is larger than the sum of its proper divisors (1).

6251222591 is an equidigital number, since it uses as much as digits as its factorization.

6251222591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 35.

The square root of 6251222591 is about 79064.6734705203. The cubic root of 6251222591 is about 1842.1358498562.

The spelling of 6251222591 in words is "six billion, two hundred fifty-one million, two hundred twenty-two thousand, five hundred ninety-one".