25533225252 has 36 divisors (see below), whose sum is σ = 65006665360. Its totient is φ = 8449842672.

The previous prime is 25533225241. The next prime is 25533225281. The reversal of 25533225252 is 25252233552.

25533225252 is a `hidden beast` number, since 2 + 5 + 533 + 22 + 52 + 52 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2546278 + ... + 2556285.

Almost surely, 2^25533225252 is an apocalyptic number.

It is an amenable number.

25533225252 is an abundant number, since it is smaller than the sum of its proper divisors (39473440108).

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

25533225252 is a wasteful number, since it uses less digits than its factorization.

25533225252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5102712 (or 5102707 counting only the distinct ones).

The product of its digits is 180000, while the sum is 36.

The spelling of 25533225252 in words is "twenty-five billion, five hundred thirty-three million, two hundred twenty-five thousand, two hundred fifty-two".