25532981352 has 160 divisors (see below), whose sum is σ = 76362770880. Its totient is φ = 7951426560.

The previous prime is 25532981339. The next prime is 25532981387. The reversal of 25532981352 is 25318923552.

25532981352 is a `hidden beast` number, since 2 + 5 + 5 + 3 + 298 + 1 + 352 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 25532981298 and 25532981307.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 620952 + ... + 660792.

It is an arithmetic number, because the mean of its divisors is an integer number (477267318).

Almost surely, 2^25532981352 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 25532981352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38181385440).

25532981352 is an abundant number, since it is smaller than the sum of its proper divisors (50829789528).

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

25532981352 is a wasteful number, since it uses less digits than its factorization.

25532981352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39925 (or 39912 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The spelling of 25532981352 in words is "twenty-five billion, five hundred thirty-two million, nine hundred eighty-one thousand, three hundred fifty-two".