250465551661 has 8 divisors (see below), whose sum is σ = 269777526200. Its totient is φ = 231160061952.

The previous prime is 250465551649. The next prime is 250465551671. The reversal of 250465551661 is 166155564052.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 46376100 + 250419175561 = 6810^2 + 500419^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 250465551661 - 2⁵ = 250465551629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250465551601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540836 + ... + 1695613.

It is an arithmetic number, because the mean of its divisors is an integer number (33722190775).

Almost surely, 2^250465551661 is an apocalyptic number.

It is an amenable number.

250465551661 is a deficient number, since it is larger than the sum of its proper divisors (19311974539).

250465551661 is a wasteful number, since it uses less digits than its factorization.

250465551661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242415.

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 250465551661 in words is "two hundred fifty billion, four hundred sixty-five million, five hundred fifty-one thousand, six hundred sixty-one".