250242044557 has 2 divisors, whose sum is σ = 250242044558. Its totient is φ = 250242044556.

The previous prime is 250242044491. The next prime is 250242044567. The reversal of 250242044557 is 755440242052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205706695401 + 44535349156 = 453549^2 + 211034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250242044557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250242044567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125121022278 + 125121022279.

It is an arithmetic number, because the mean of its divisors is an integer number (125121022279).

Almost surely, 2^250242044557 is an apocalyptic number.

It is an amenable number.

250242044557 is a deficient number, since it is larger than the sum of its proper divisors (1).

250242044557 is an equidigital number, since it uses as much as digits as its factorization.

250242044557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448000, while the sum is 40.

The spelling of 250242044557 in words is "two hundred fifty billion, two hundred forty-two million, forty-four thousand, five hundred fifty-seven".