22725857826 has 80 divisors (see below), whose sum is σ = 58305420096. Its totient is φ = 6481054944.

The previous prime is 22725857807. The next prime is 22725857831. The reversal of 22725857826 is 62875852722.

22725857826 is a `hidden beast` number, since 2 + 27 + 25 + 8 + 578 + 26 = 666.

It is a super-2 number, since 2×22725857826² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 601980 + ... + 638616.

Almost surely, 2^22725857826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22725857826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29152710048).

22725857826 is an abundant number, since it is smaller than the sum of its proper divisors (35579562270).

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

22725857826 is a wasteful number, since it uses less digits than its factorization.

22725857826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37205 (or 37196 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The spelling of 22725857826 in words is "twenty-two billion, seven hundred twenty-five million, eight hundred fifty-seven thousand, eight hundred twenty-six".