250608649 has 2 divisors, whose sum is σ = 250608650. Its totient is φ = 250608648.

The previous prime is 250608647. The next prime is 250608661. The reversal of 250608649 is 946806052.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210830400 + 39778249 = 14520^2 + 6307^2 .

It is a cyclic number.

It is not a de Polignac number, because 250608649 - 2¹ = 250608647 is a prime.

Together with 250608647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (250608643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125304324 + 125304325.

It is an arithmetic number, because the mean of its divisors is an integer number (125304325).

Almost surely, 2^250608649 is an apocalyptic number.

It is an amenable number.

250608649 is a deficient number, since it is larger than the sum of its proper divisors (1).

250608649 is an equidigital number, since it uses as much as digits as its factorization.

250608649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 250608649 is about 15830.6237716648. The cubic root of 250608649 is about 630.4713437504.

The spelling of 250608649 in words is "two hundred fifty million, six hundred eight thousand, six hundred forty-nine".