253665250 has 64 divisors (see below), whose sum is σ = 498161664. Its totient is φ = 96600000.

The previous prime is 253665241. The next prime is 253665253. The reversal of 253665250 is 52566352.

It is not an unprimeable number, because it can be changed into a prime (253665253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550020 + ... + 550480.

It is an arithmetic number, because the mean of its divisors is an integer number (7783776).

Almost surely, 2^253665250 is an apocalyptic number.

253665250 is a deficient number, since it is larger than the sum of its proper divisors (244496414).

253665250 is a wasteful number, since it uses less digits than its factorization.

253665250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 253665250 is about 15926.8719464934. The cubic root of 253665250 is about 633.0242181893.

The spelling of 253665250 in words is "two hundred fifty-three million, six hundred sixty-five thousand, two hundred fifty".