249425999 has 2 divisors, whose sum is σ = 249426000. Its totient is φ = 249425998.

The previous prime is 249425963. The next prime is 249426017. The reversal of 249425999 is 999524942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 249425999 - 2²⁴ = 232648783 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 249425999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249425959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124712999 + 124713000.

It is an arithmetic number, because the mean of its divisors is an integer number (124713000).

Almost surely, 2^249425999 is an apocalyptic number.

249425999 is a deficient number, since it is larger than the sum of its proper divisors (1).

249425999 is an equidigital number, since it uses as much as digits as its factorization.

249425999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 53.

The square root of 249425999 is about 15793.2263644893. The cubic root of 249425999 is about 629.4780248564.

The spelling of 249425999 in words is "two hundred forty-nine million, four hundred twenty-five thousand, nine hundred ninety-nine".