250122540400 has 120 divisors (see below), whose sum is σ = 605378106000. Its totient is φ = 99308052480.

The previous prime is 250122540379. The next prime is 250122540401. The reversal of 250122540400 is 4045221052.

It is a super-2 number, since 2×250122540400² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250122540401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94135872 + ... + 94138528.

It is an arithmetic number, because the mean of its divisors is an integer number (5044817550).

Almost surely, 2^250122540400 is an apocalyptic number.

250122540400 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 250122540400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302689053000).

250122540400 is an abundant number, since it is smaller than the sum of its proper divisors (355255565600).

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

250122540400 is a wasteful number, since it uses less digits than its factorization.

250122540400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331 (or 4320 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

Adding to 250122540400 its reverse (4045221052), we get a palindrome (254167761452).

The spelling of 250122540400 in words is "two hundred fifty billion, one hundred twenty-two million, five hundred forty thousand, four hundred".