250311520242 has 80 divisors (see below), whose sum is σ = 641125605120. Its totient is φ = 71504612352.

The previous prime is 250311520229. The next prime is 250311520243. The reversal of 250311520242 is 242025113052.

250311520242 is a `hidden beast` number, since 2 + 503 + 1 + 152 + 0 + 2 + 4 + 2 = 666.

It is a super-2 number, since 2×250311520242² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (250311520243) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7475634 + ... + 7509042.

It is an arithmetic number, because the mean of its divisors is an integer number (8014070064).

Almost surely, 2^250311520242 is an apocalyptic number.

250311520242 is an abundant number, since it is smaller than the sum of its proper divisors (390814084878).

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

250311520242 is a wasteful number, since it uses less digits than its factorization.

250311520242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40037 (or 40028 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 250311520242 its reverse (242025113052), we get a palindrome (492336633294).

The spelling of 250311520242 in words is "two hundred fifty billion, three hundred eleven million, five hundred twenty thousand, two hundred forty-two".