25155272208 has 160 divisors (see below), whose sum is σ = 72262374912. Its totient is φ = 7476480000.

The previous prime is 25155272111. The next prime is 25155272209. The reversal of 25155272208 is 80227255152.

It is not an unprimeable number, because it can be changed into a prime (25155272209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8877960 + ... + 8880792.

Almost surely, 2^25155272208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25155272208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36131187456).

25155272208 is an abundant number, since it is smaller than the sum of its proper divisors (47107102704).

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

25155272208 is a wasteful number, since it uses less digits than its factorization.

25155272208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173 (or 3167 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 39.

The spelling of 25155272208 in words is "twenty-five billion, one hundred fifty-five million, two hundred seventy-two thousand, two hundred eight".