250550040 has 128 divisors (see below), whose sum is σ = 844784640. Its totient is φ = 58983936.

The previous prime is 250550033. The next prime is 250550077. The reversal of 250550040 is 40055052.

It is a junction number, because it is equal to n+sod(n) for n = 250549989 and 250550016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32389 + ... + 39371.

It is an arithmetic number, because the mean of its divisors is an integer number (6599880).

Almost surely, 2^250550040 is an apocalyptic number.

250550040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250550040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422392320).

250550040 is an abundant number, since it is smaller than the sum of its proper divisors (594234600).

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

250550040 is a wasteful number, since it uses less digits than its factorization.

250550040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033 (or 7029 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 250550040 is about 15828.7725361128. The cubic root of 250550040 is about 630.4221911825.

The spelling of 250550040 in words is "two hundred fifty million, five hundred fifty thousand, forty".