250040040 has 64 divisors (see below), whose sum is σ = 751584960. Its totient is φ = 66547200.

The previous prime is 250040033. The next prime is 250040041. The reversal of 250040040 is 40040052.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (250040041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70387 + ... + 73853.

It is an arithmetic number, because the mean of its divisors is an integer number (11743515).

Almost surely, 2^250040040 is an apocalyptic number.

250040040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250040040 is an abundant number, since it is smaller than the sum of its proper divisors (501544920).

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

250040040 is a wasteful number, since it uses less digits than its factorization.

250040040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4082 (or 4078 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 250040040 is about 15812.6544261234. The cubic root of 250040040 is about 629.9941546447.

Adding to 250040040 its reverse (40040052), we get a palindrome (290080092).

The spelling of 250040040 in words is "two hundred fifty million, forty thousand, forty".