25361989452 has 144 divisors (see below), whose sum is σ = 68315520000. Its totient is φ = 7921203840.

The previous prime is 25361989451. The next prime is 25361989453. The reversal of 25361989452 is 25498916352.

25361989452 is a `hidden beast` number, since 2 + 53 + 61 + 9 + 89 + 452 = 666.

It is an interprime number because it is at equal distance from previous prime (25361989451) and next prime (25361989453).

It is not an unprimeable number, because it can be changed into a prime (25361989451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4408674 + ... + 4414422.

Almost surely, 2^25361989452 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 25361989452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34157760000).

25361989452 is an abundant number, since it is smaller than the sum of its proper divisors (42953530548).

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

25361989452 is a wasteful number, since it uses less digits than its factorization.

25361989452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916 (or 5911 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 25361989452 in words is "twenty-five billion, three hundred sixty-one million, nine hundred eighty-nine thousand, four hundred fifty-two".