250138902500 has 30 divisors (see below), whose sum is σ = 547003757454. Its totient is φ = 100055560000.

The previous prime is 250138902463. The next prime is 250138902521. The reversal of 250138902500 is 5209831052.

It can be written as a sum of positive squares in 5 ways, for example, as 167737755364 + 82401147136 = 409558^2 + 287056^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50025281 + ... + 50030280.

Almost surely, 2^250138902500 is an apocalyptic number.

250138902500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250138902500 is an abundant number, since it is smaller than the sum of its proper divisors (296864854954).

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

250138902500 is a wasteful number, since it uses less digits than its factorization.

250138902500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100055585 (or 100055568 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 250138902500 in words is "two hundred fifty billion, one hundred thirty-eight million, nine hundred two thousand, five hundred".