25601434002 has 24 divisors (see below), whose sum is σ = 58732702236. Its totient is φ = 8031822336.

The previous prime is 25601433983. The next prime is 25601434003. The reversal of 25601434002 is 20043410652.

25601434002 is a `hidden beast` number, since 25 + 601 + 4 + 34 + 0 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24516983241 + 1084450761 = 156579^2 + 32931^2 .

It is not an unprimeable number, because it can be changed into a prime (25601434003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41832103 + ... + 41832714.

Almost surely, 2^25601434002 is an apocalyptic number.

25601434002 is an abundant number, since it is smaller than the sum of its proper divisors (33131268234).

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

25601434002 is a wasteful number, since it uses less digits than its factorization.

25601434002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83664842 (or 83664839 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 25601434002 its reverse (20043410652), we get a palindrome (45644844654).

The spelling of 25601434002 in words is "twenty-five billion, six hundred one million, four hundred thirty-four thousand, two".