25253303652 has 72 divisors (see below), whose sum is σ = 66660082944. Its totient is φ = 8045744256.

The previous prime is 25253303641. The next prime is 25253303657. The reversal of 25253303652 is 25630335252.

25253303652 is a `hidden beast` number, since 252 + 53 + 303 + 6 + 52 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (25253303657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1167528 + ... + 1188960.

Almost surely, 2^25253303652 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 25253303652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33330041472).

25253303652 is an abundant number, since it is smaller than the sum of its proper divisors (41406779292).

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

25253303652 is a wasteful number, since it uses less digits than its factorization.

25253303652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22889 (or 22884 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 36.

The spelling of 25253303652 in words is "twenty-five billion, two hundred fifty-three million, three hundred three thousand, six hundred fifty-two".