25533542224 has 40 divisors (see below), whose sum is σ = 52505967528. Its totient is φ = 11987189760.

The previous prime is 25533542213. The next prime is 25533542233. The reversal of 25533542224 is 42224533552.

It can be written as a sum of positive squares in 4 ways, for example, as 67765824 + 25465776400 = 8232^2 + 159580^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3024 + ... + 226000.

Almost surely, 2^25533542224 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 25533542224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26252983764).

25533542224 is an abundant number, since it is smaller than the sum of its proper divisors (26972425304).

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

25533542224 is a wasteful number, since it uses less digits than its factorization.

25533542224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223423 (or 223417 counting only the distinct ones).

The product of its digits is 288000, while the sum is 37.

The spelling of 25533542224 in words is "twenty-five billion, five hundred thirty-three million, five hundred forty-two thousand, two hundred twenty-four".