25662106616 has 8 divisors (see below), whose sum is σ = 48116449920. Its totient is φ = 12831053304.

The previous prime is 25662106607. The next prime is 25662106661. The reversal of 25662106616 is 61660126652.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1603881656 + ... + 1603881671.

It is an arithmetic number, because the mean of its divisors is an integer number (6014556240).

Almost surely, 2^25662106616 is an apocalyptic number.

It is an amenable number.

25662106616 is a deficient number, since it is larger than the sum of its proper divisors (22454343304).

25662106616 is a wasteful number, since it uses less digits than its factorization.

25662106616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3207763333 (or 3207763329 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 25662106616 in words is "twenty-five billion, six hundred sixty-two million, one hundred six thousand, six hundred sixteen".