25551227250 has 80 divisors (see below), whose sum is σ = 71452644120. Its totient is φ = 6813655200.

The previous prime is 25551227243. The next prime is 25551227263. The reversal of 25551227250 is 5272215552.

25551227250 is a `hidden beast` number, since 25 + 5 + 512 + 2 + 72 + 50 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1735638921 + 23815588329 = 41661^2 + 154323^2 .

It is a super-2 number, since 2×25551227250² (a number of 22 digits) contains 22 as substring.

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, 610645 + ... + 651144.

Almost surely, 2^25551227250 is an apocalyptic number.

25551227250 is an abundant number, since it is smaller than the sum of its proper divisors (45901416870).

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

25551227250 is a wasteful number, since it uses less digits than its factorization.

25551227250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261818 (or 1261799 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 36.

The spelling of 25551227250 in words is "twenty-five billion, five hundred fifty-one million, two hundred twenty-seven thousand, two hundred fifty".