25555613606612 has 24 divisors (see below), whose sum is σ = 45617745360096. Its totient is φ = 12522518150688.

The previous prime is 25555613606599. The next prime is 25555613606623. The reversal of 25555613606612 is 21660631655552.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68071778 + ... + 68446169.

It is an arithmetic number, because the mean of its divisors is an integer number (1900739390004).

Almost surely, 2^{25555613606612} is an apocalyptic number.

It is an amenable number.

25555613606612 is a deficient number, since it is larger than the sum of its proper divisors (20062131753484).

25555613606612 is a wasteful number, since it uses less digits than its factorization.

25555613606612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136518887 (or 136518885 counting only the distinct ones).

The product of its (nonzero) digits is 9720000, while the sum is 53.

The spelling of 25555613606612 in words is "twenty-five trillion, five hundred fifty-five billion, six hundred thirteen million, six hundred six thousand, six hundred twelve".