25442360166 has 32 divisors (see below), whose sum is σ = 51151190400. Its totient is φ = 8436415680.

The previous prime is 25442360161. The next prime is 25442360183. The reversal of 25442360166 is 66106324452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25442360161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3565290 + ... + 3572418.

It is an arithmetic number, because the mean of its divisors is an integer number (1598474700).

Almost surely, 2^25442360166 is an apocalyptic number.

25442360166 is an abundant number, since it is smaller than the sum of its proper divisors (25708830234).

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

25442360166 is a wasteful number, since it uses less digits than its factorization.

25442360166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10164.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 25442360166 in words is "twenty-five billion, four hundred forty-two million, three hundred sixty thousand, one hundred sixty-six".