250000249979 has 4 divisors (see below), whose sum is σ = 252427436976. Its totient is φ = 247573062984.

The previous prime is 250000249973. The next prime is 250000249999. The reversal of 250000249979 is 979942000052.

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

It is a cyclic number.

It is not a de Polignac number, because 250000249979 - 2³⁶ = 181280773243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (250000249973) 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, 1213593344 + ... + 1213593549.

It is an arithmetic number, because the mean of its divisors is an integer number (63106859244).

Almost surely, 2^250000249979 is an apocalyptic number.

250000249979 is a deficient number, since it is larger than the sum of its proper divisors (2427186997).

250000249979 is a wasteful number, since it uses less digits than its factorization.

250000249979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427186996.

The product of its (nonzero) digits is 408240, while the sum is 47.

The spelling of 250000249979 in words is "two hundred fifty billion, two hundred forty-nine thousand, nine hundred seventy-nine".