250401664040 has 48 divisors (see below), whose sum is σ = 619278507540. Its totient is φ = 91055148800.

The previous prime is 250401664001. The next prime is 250401664103. The reversal of 250401664040 is 40466104052.

It can be written as a sum of positive squares in 2 ways, for example, as 232279658116 + 18122005924 = 481954^2 + 134618^2 .

It is a junction number, because it is equal to n+sod(n) for n = 250401663988 and 250401664006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25863101 + ... + 25872780.

Almost surely, 2^250401664040 is an apocalyptic number.

250401664040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250401664040 is an abundant number, since it is smaller than the sum of its proper divisors (368876843500).

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

250401664040 is a wasteful number, since it uses less digits than its factorization.

250401664040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51735914 (or 51735899 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 250401664040 its reverse (40466104052), we get a palindrome (290867768092).

The spelling of 250401664040 in words is "two hundred fifty billion, four hundred one million, six hundred sixty-four thousand, forty".