250420502251 has 2 divisors, whose sum is σ = 250420502252. Its totient is φ = 250420502250.

The previous prime is 250420502249. The next prime is 250420502291. The reversal of 250420502251 is 152205024052.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 250420502251 - 2¹ = 250420502249 is a prime.

Together with 250420502249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (250420502221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125210251125 + 125210251126.

It is an arithmetic number, because the mean of its divisors is an integer number (125210251126).

Almost surely, 2^250420502251 is an apocalyptic number.

250420502251 is a deficient number, since it is larger than the sum of its proper divisors (1).

250420502251 is an equidigital number, since it uses as much as digits as its factorization.

250420502251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 250420502251 in words is "two hundred fifty billion, four hundred twenty million, five hundred two thousand, two hundred fifty-one".