25045252236 has 18 divisors (see below), whose sum is σ = 63308832132. Its totient is φ = 8348417400.

The previous prime is 25045252217. The next prime is 25045252289. The reversal of 25045252236 is 63225254052.

25045252236 is a `hidden beast` number, since 2 + 50 + 4 + 52 + 522 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 695701451 = 25045252236 / (2 + 5 + 0 + 4 + 5 + 2 + 5 + 2 + 2 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 25045252236.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 347850690 + ... + 347850761.

Almost surely, 2^25045252236 is an apocalyptic number.

It is an amenable number.

25045252236 is an abundant number, since it is smaller than the sum of its proper divisors (38263579896).

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

25045252236 is a wasteful number, since it uses less digits than its factorization.

25045252236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695701461 (or 695701456 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 25045252236 in words is "twenty-five billion, forty-five million, two hundred fifty-two thousand, two hundred thirty-six".