250004187940 has 24 divisors (see below), whose sum is σ = 565394087160. Its totient is φ = 92309238528.

The previous prime is 250004187929. The next prime is 250004187941. The reversal of 250004187940 is 49781400052.

It can be written as a sum of positive squares in 4 ways, for example, as 29290268736 + 220713919204 = 171144^2 + 469802^2 .

It is a junction number, because it is equal to n+sod(n) for n = 250004187893 and 250004187902.

It is not an unprimeable number, because it can be changed into a prime (250004187941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480777025 + ... + 480777544.

It is an arithmetic number, because the mean of its divisors is an integer number (23558086965).

Almost surely, 2^250004187940 is an apocalyptic number.

250004187940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250004187940 is an abundant number, since it is smaller than the sum of its proper divisors (315389899220).

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

250004187940 is a wasteful number, since it uses less digits than its factorization.

250004187940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961554591 (or 961554589 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

Adding to 250004187940 its reverse (49781400052), we get a palindrome (299785587992).

The spelling of 250004187940 in words is "two hundred fifty billion, four million, one hundred eighty-seven thousand, nine hundred forty".