25442166726 has 48 divisors (see below), whose sum is σ = 59504945760. Its totient is φ = 7832267520.

The previous prime is 25442166719. The next prime is 25442166779. The reversal of 25442166726 is 62766124452.

25442166726 is a `hidden beast` number, since 2 + 544 + 21 + 6 + 67 + 26 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1047555 + ... + 1071566.

It is an arithmetic number, because the mean of its divisors is an integer number (1239686370).

Almost surely, 2^25442166726 is an apocalyptic number.

25442166726 is an abundant number, since it is smaller than the sum of its proper divisors (34062779034).

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

25442166726 is a wasteful number, since it uses less digits than its factorization.

25442166726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119181 (or 2119178 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The spelling of 25442166726 in words is "twenty-five billion, four hundred forty-two million, one hundred sixty-six thousand, seven hundred twenty-six".