250835632561 has 2 divisors, whose sum is σ = 250835632562. Its totient is φ = 250835632560.

The previous prime is 250835632483. The next prime is 250835632601. The reversal of 250835632561 is 165236538052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219697500961 + 31138131600 = 468719^2 + 176460^2 .

It is a cyclic number.

It is not a de Polignac number, because 250835632561 - 2²¹ = 250833535409 is a prime.

It is not a weakly prime, because it can be changed into another prime (250835630561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125417816280 + 125417816281.

It is an arithmetic number, because the mean of its divisors is an integer number (125417816281).

Almost surely, 2^250835632561 is an apocalyptic number.

It is an amenable number.

250835632561 is a deficient number, since it is larger than the sum of its proper divisors (1).

250835632561 is an equidigital number, since it uses as much as digits as its factorization.

250835632561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 250835632561 in words is "two hundred fifty billion, eight hundred thirty-five million, six hundred thirty-two thousand, five hundred sixty-one".