250138155 has 16 divisors (see below), whose sum is σ = 400928544. Its totient is φ = 133171200.

The previous prime is 250138151. The next prime is 250138157. The reversal of 250138155 is 551831052.

It is not a de Polignac number, because 250138155 - 2² = 250138151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (250138151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5796 + ... + 23105.

It is an arithmetic number, because the mean of its divisors is an integer number (25058034).

Almost surely, 2^250138155 is an apocalyptic number.

250138155 is a deficient number, since it is larger than the sum of its proper divisors (150790389).

250138155 is a wasteful number, since it uses less digits than its factorization.

250138155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29486.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 250138155 is about 15815.7565421323. The cubic root of 250138155 is about 630.0765465065.

The spelling of 250138155 in words is "two hundred fifty million, one hundred thirty-eight thousand, one hundred fifty-five".