25608590842 has 4 divisors (see below), whose sum is σ = 38412886266. Its totient is φ = 12804295420.

The previous prime is 25608590801. The next prime is 25608590863. The reversal of 25608590842 is 24809580652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17429016361 + 8179574481 = 132019^2 + 90441^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6402147709 + ... + 6402147712.

Almost surely, 2^25608590842 is an apocalyptic number.

25608590842 is a deficient number, since it is larger than the sum of its proper divisors (12804295424).

25608590842 is a wasteful number, since it uses less digits than its factorization.

25608590842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12804295423.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 25608590842 in words is "twenty-five billion, six hundred eight million, five hundred ninety thousand, eight hundred forty-two".