250005390 has 32 divisors (see below), whose sum is σ = 619370496. Its totient is φ = 64517280.

The previous prime is 250005373. The next prime is 250005391. The reversal of 250005390 is 93500052.

It is a self number, because there is not a number n which added to its sum of digits gives 250005390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250005391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133482 + ... + 135341.

It is an arithmetic number, because the mean of its divisors is an integer number (19355328).

Almost surely, 2^250005390 is an apocalyptic number.

250005390 is an abundant number, since it is smaller than the sum of its proper divisors (369365106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

250005390 is a wasteful number, since it uses less digits than its factorization.

250005390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268864.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 250005390 is about 15811.5587466891. The cubic root of 250005390 is about 629.9650522312.

The spelling of 250005390 in words is "two hundred fifty million, five thousand, three hundred ninety".