251015284241 has 2 divisors, whose sum is σ = 251015284242. Its totient is φ = 251015284240.

The previous prime is 251015284103. The next prime is 251015284243. The reversal of 251015284241 is 142482510152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246292845841 + 4722438400 = 496279^2 + 68720^2 .

It is a cyclic number.

It is not a de Polignac number, because 251015284241 - 2³⁴ = 233835415057 is a prime.

Together with 251015284243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (251015284243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125507642120 + 125507642121.

It is an arithmetic number, because the mean of its divisors is an integer number (125507642121).

Almost surely, 2^251015284241 is an apocalyptic number.

It is an amenable number.

251015284241 is a deficient number, since it is larger than the sum of its proper divisors (1).

251015284241 is an equidigital number, since it uses as much as digits as its factorization.

251015284241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25600, while the sum is 35.

Adding to 251015284241 its reverse (142482510152), we get a palindrome (393497794393).

The spelling of 251015284241 in words is "two hundred fifty-one billion, fifteen million, two hundred eighty-four thousand, two hundred forty-one".