250147240561 has 2 divisors, whose sum is σ = 250147240562. Its totient is φ = 250147240560.

The previous prime is 250147240529. The next prime is 250147240573. The reversal of 250147240561 is 165042741052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202729565025 + 47417675536 = 450255^2 + 217756^2 .

It is a cyclic number.

It is not a de Polignac number, because 250147240561 - 2⁵ = 250147240529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 250147240561.

It is not a weakly prime, because it can be changed into another prime (250144240561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125073620280 + 125073620281.

It is an arithmetic number, because the mean of its divisors is an integer number (125073620281).

Almost surely, 2^250147240561 is an apocalyptic number.

It is an amenable number.

250147240561 is a deficient number, since it is larger than the sum of its proper divisors (1).

250147240561 is an equidigital number, since it uses as much as digits as its factorization.

250147240561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 250147240561 in words is "two hundred fifty billion, one hundred forty-seven million, two hundred forty thousand, five hundred sixty-one".