251222854199 has 2 divisors, whose sum is σ = 251222854200. Its totient is φ = 251222854198.

The previous prime is 251222854163. The next prime is 251222854219. The reversal of 251222854199 is 991458222152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251222854199 - 2²⁴ = 251206076983 is a prime.

It is a super-2 number, since 2×251222854199² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251222850199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125611427099 + 125611427100.

It is an arithmetic number, because the mean of its divisors is an integer number (125611427100).

Almost surely, 2^251222854199 is an apocalyptic number.

251222854199 is a deficient number, since it is larger than the sum of its proper divisors (1).

251222854199 is an equidigital number, since it uses as much as digits as its factorization.

251222854199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 50.

The spelling of 251222854199 in words is "two hundred fifty-one billion, two hundred twenty-two million, eight hundred fifty-four thousand, one hundred ninety-nine".