251200452157 has 2 divisors, whose sum is σ = 251200452158. Its totient is φ = 251200452156.

The previous prime is 251200452149. The next prime is 251200452277. The reversal of 251200452157 is 751254002152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 247540081156 + 3660371001 = 497534^2 + 60501^2 .

It is a cyclic number.

It is not a de Polignac number, because 251200452157 - 2³ = 251200452149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251200452857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125600226078 + 125600226079.

It is an arithmetic number, because the mean of its divisors is an integer number (125600226079).

Almost surely, 2^251200452157 is an apocalyptic number.

It is an amenable number.

251200452157 is a deficient number, since it is larger than the sum of its proper divisors (1).

251200452157 is an equidigital number, since it uses as much as digits as its factorization.

251200452157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 34.

The spelling of 251200452157 in words is "two hundred fifty-one billion, two hundred million, four hundred fifty-two thousand, one hundred fifty-seven".