25122374406 has 12 divisors (see below), whose sum is σ = 54431811252. Its totient is φ = 8374124796.

The previous prime is 25122374357. The next prime is 25122374413. The reversal of 25122374406 is 60447322152.

25122374406 is a `hidden beast` number, since 2 + 5 + 12 + 237 + 4 + 406 = 666.

It is a super-2 number, since 2×25122374406² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 697843716 + ... + 697843751.

It is an arithmetic number, because the mean of its divisors is an integer number (4535984271).

Almost surely, 2^25122374406 is an apocalyptic number.

25122374406 is an abundant number, since it is smaller than the sum of its proper divisors (29309436846).

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

25122374406 is a wasteful number, since it uses less digits than its factorization.

25122374406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395687475 (or 1395687472 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

Adding to 25122374406 its reverse (60447322152), we get a palindrome (85569696558).

The spelling of 25122374406 in words is "twenty-five billion, one hundred twenty-two million, three hundred seventy-four thousand, four hundred six".