250057780381 has 2 divisors, whose sum is σ = 250057780382. Its totient is φ = 250057780380.

The previous prime is 250057780339. The next prime is 250057780397. The reversal of 250057780381 is 183087750052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195461252100 + 54596528281 = 442110^2 + 233659^2 .

It is a cyclic number.

It is not a de Polignac number, because 250057780381 - 2¹⁵ = 250057747613 is a prime.

It is a super-2 number, since 2×250057780381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (250057780321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125028890190 + 125028890191.

It is an arithmetic number, because the mean of its divisors is an integer number (125028890191).

Almost surely, 2^250057780381 is an apocalyptic number.

It is an amenable number.

250057780381 is a deficient number, since it is larger than the sum of its proper divisors (1).

250057780381 is an equidigital number, since it uses as much as digits as its factorization.

250057780381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 470400, while the sum is 46.

The spelling of 250057780381 in words is "two hundred fifty billion, fifty-seven million, seven hundred eighty thousand, three hundred eighty-one".