25604840652 has 12 divisors (see below), whose sum is σ = 59744628216. Its totient is φ = 8534946880.

The previous prime is 25604840647. The next prime is 25604840663.

It is a happy number.

25604840652 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066868349 + ... + 1066868372.

It is an arithmetic number, because the mean of its divisors is an integer number (4978719018).

Almost surely, 2^25604840652 is an apocalyptic number.

It is an amenable number.

25604840652 is an abundant number, since it is smaller than the sum of its proper divisors (34139787564).

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

25604840652 is a wasteful number, since it uses less digits than its factorization.

25604840652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133736728 (or 2133736726 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 25604840652 in words is "twenty-five billion, six hundred four million, eight hundred forty thousand, six hundred fifty-two".