250405122 has 96 divisors (see below), whose sum is σ = 584551872. Its totient is φ = 70848000.

The previous prime is 250405097. The next prime is 250405147. The reversal of 250405122 is 221504052.

It is a happy number.

250405122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (250405097) and next prime (250405147).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4104972 + ... + 4105032.

It is an arithmetic number, because the mean of its divisors is an integer number (6089082).

Almost surely, 2^250405122 is an apocalyptic number.

250405122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 250405122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292275936).

250405122 is an abundant number, since it is smaller than the sum of its proper divisors (334146750).

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

250405122 is a wasteful number, since it uses less digits than its factorization.

250405122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 250405122 is about 15824.1941974939. The cubic root of 250405122 is about 630.3006224626.

Adding to 250405122 its reverse (221504052), we get a palindrome (471909174).

The spelling of 250405122 in words is "two hundred fifty million, four hundred five thousand, one hundred twenty-two".