25403115606 has 96 divisors (see below), whose sum is σ = 59107864320. Its totient is φ = 7216704000.

The previous prime is 25403115581. The next prime is 25403115611. The reversal of 25403115606 is 60651130452.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5128431 + ... + 5133381.

It is an arithmetic number, because the mean of its divisors is an integer number (615706920).

Almost surely, 2^25403115606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25403115606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29553932160).

25403115606 is an abundant number, since it is smaller than the sum of its proper divisors (33704748714).

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

25403115606 is a wasteful number, since it uses less digits than its factorization.

25403115606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5270 (or 5253 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 25403115606 in words is "twenty-five billion, four hundred three million, one hundred fifteen thousand, six hundred six".