25533453222 has 24 divisors (see below), whose sum is σ = 55339783200. Its totient is φ = 8508489360.

The previous prime is 25533453203. The next prime is 25533453293. The reversal of 25533453222 is 22235433552.

25533453222 is a `hidden beast` number, since 2 + 55 + 334 + 53 + 222 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162222 + ... + 278177.

It is an arithmetic number, because the mean of its divisors is an integer number (2305824300).

Almost surely, 2^25533453222 is an apocalyptic number.

25533453222 is an abundant number, since it is smaller than the sum of its proper divisors (29806329978).

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

25533453222 is a wasteful number, since it uses less digits than its factorization.

25533453222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443628 (or 443625 counting only the distinct ones).

The product of its digits is 216000, while the sum is 36.

Adding to 25533453222 its reverse (22235433552), we get a palindrome (47768886774).

The spelling of 25533453222 in words is "twenty-five billion, five hundred thirty-three million, four hundred fifty-three thousand, two hundred twenty-two".