250161649 has 4 divisors (see below), whose sum is σ = 252456820. Its totient is φ = 247866480.

The previous prime is 250161641. The next prime is 250161707. The reversal of 250161649 is 946161052.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64112049 + 186049600 = 8007^2 + 13640^2 .

It is a cyclic number.

It is not a de Polignac number, because 250161649 - 2³ = 250161641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250161641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147422 + ... + 1147639.

It is an arithmetic number, because the mean of its divisors is an integer number (63114205).

Almost surely, 2^250161649 is an apocalyptic number.

It is an amenable number.

250161649 is a deficient number, since it is larger than the sum of its proper divisors (2295171).

250161649 is a wasteful number, since it uses less digits than its factorization.

250161649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295170.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 250161649 is about 15816.4992650080. The cubic root of 250161649 is about 630.0962723456.

The spelling of 250161649 in words is "two hundred fifty million, one hundred sixty-one thousand, six hundred forty-nine".