25522098840 has 480 divisors, whose sum is σ = 105052345200. Its totient is φ = 5525936640.

The previous prime is 25522098829. The next prime is 25522098881. The reversal of 25522098840 is 4889022552.

25522098840 is a `hidden beast` number, since 2 + 5 + 522 + 0 + 9 + 88 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 3012210 + ... + 3020670.

Almost surely, 2^25522098840 is an apocalyptic number.

25522098840 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 25522098840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52526172600).

25522098840 is an abundant number, since it is smaller than the sum of its proper divisors (79530246360).

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

25522098840 is a wasteful number, since it uses less digits than its factorization.

25522098840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8517 (or 8497 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 25522098840 in words is "twenty-five billion, five hundred twenty-two million, ninety-eight thousand, eight hundred forty".