25066171272 has 16 divisors (see below), whose sum is σ = 62665428240. Its totient is φ = 8355390416.

The previous prime is 25066171217. The next prime is 25066171279. The reversal of 25066171272 is 27217166052.

It is a self number, because there is not a number n which added to its sum of digits gives 25066171272.

It is not an unprimeable number, because it can be changed into a prime (25066171279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522211878 + ... + 522211925.

It is an arithmetic number, because the mean of its divisors is an integer number (3916589265).

Almost surely, 2^25066171272 is an apocalyptic number.

It is an amenable number.

25066171272 is an abundant number, since it is smaller than the sum of its proper divisors (37599256968).

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

25066171272 is a wasteful number, since it uses less digits than its factorization.

25066171272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044423812 (or 1044423808 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 25066171272 in words is "twenty-five billion, sixty-six million, one hundred seventy-one thousand, two hundred seventy-two".