25645839146 has 8 divisors (see below), whose sum is σ = 38549070720. Its totient is φ = 12796148908.

The previous prime is 25645839137. The next prime is 25645839199. The reversal of 25645839146 is 64193854652.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13384136 + ... + 13386051.

It is an arithmetic number, because the mean of its divisors is an integer number (4818633840).

Almost surely, 2^25645839146 is an apocalyptic number.

25645839146 is a deficient number, since it is larger than the sum of its proper divisors (12903231574).

25645839146 is a wasteful number, since it uses less digits than its factorization.

25645839146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26770668.

The product of its digits is 6220800, while the sum is 53.

The spelling of 25645839146 in words is "twenty-five billion, six hundred forty-five million, eight hundred thirty-nine thousand, one hundred forty-six".