251224020253 has 2 divisors, whose sum is σ = 251224020254. Its totient is φ = 251224020252.

The previous prime is 251224020239. The next prime is 251224020263. The reversal of 251224020253 is 352020422152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205777455129 + 45446565124 = 453627^2 + 213182^2 .

It is a cyclic number.

It is not a de Polignac number, because 251224020253 - 2²⁵ = 251190465821 is a prime.

It is a super-2 number, since 2×251224020253² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251224020233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125612010126 + 125612010127.

It is an arithmetic number, because the mean of its divisors is an integer number (125612010127).

Almost surely, 2^251224020253 is an apocalyptic number.

It is an amenable number.

251224020253 is a deficient number, since it is larger than the sum of its proper divisors (1).

251224020253 is an equidigital number, since it uses as much as digits as its factorization.

251224020253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 28.

The spelling of 251224020253 in words is "two hundred fifty-one billion, two hundred twenty-four million, twenty thousand, two hundred fifty-three".