250465551649 has 2 divisors, whose sum is σ = 250465551650. Its totient is φ = 250465551648.

The previous prime is 250465551643. The next prime is 250465551671. The reversal of 250465551649 is 946155564052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223591851025 + 26873700624 = 472855^2 + 163932^2 .

It is a cyclic number.

It is not a de Polignac number, because 250465551649 - 2¹³ = 250465543457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 250465551596 and 250465551605.

It is not a weakly prime, because it can be changed into another prime (250465551643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125232775824 + 125232775825.

It is an arithmetic number, because the mean of its divisors is an integer number (125232775825).

Almost surely, 2^250465551649 is an apocalyptic number.

It is an amenable number.

250465551649 is a deficient number, since it is larger than the sum of its proper divisors (1).

250465551649 is an equidigital number, since it uses as much as digits as its factorization.

250465551649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480000, while the sum is 52.

The spelling of 250465551649 in words is "two hundred fifty billion, four hundred sixty-five million, five hundred fifty-one thousand, six hundred forty-nine".