250228691 has 2 divisors, whose sum is σ = 250228692. Its totient is φ = 250228690.

The previous prime is 250228681. The next prime is 250228709. The reversal of 250228691 is 196822052.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-250228691 is a prime.

It is a super-2 number, since 2×250228691² = 125228795599146962, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (250228681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125114345 + 125114346.

It is an arithmetic number, because the mean of its divisors is an integer number (125114346).

Almost surely, 2^250228691 is an apocalyptic number.

250228691 is a deficient number, since it is larger than the sum of its proper divisors (1).

250228691 is an equidigital number, since it uses as much as digits as its factorization.

250228691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 250228691 is about 15818.6184921440. The cubic root of 250228691 is about 630.1525548085.

The spelling of 250228691 in words is "two hundred fifty million, two hundred twenty-eight thousand, six hundred ninety-one".