25361603512 has 64 divisors (see below), whose sum is σ = 55284408000. Its totient is φ = 10681943040.

The previous prime is 25361603507. The next prime is 25361603521. The reversal of 25361603512 is 21530616352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5288988 + ... + 5293780.

It is an arithmetic number, because the mean of its divisors is an integer number (863818875).

Almost surely, 2^25361603512 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 25361603512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27642204000).

25361603512 is an abundant number, since it is smaller than the sum of its proper divisors (29922804488).

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

25361603512 is a wasteful number, since it uses less digits than its factorization.

25361603512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416 (or 6412 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 25361603512 in words is "twenty-five billion, three hundred sixty-one million, six hundred three thousand, five hundred twelve".