25806078061 has 8 divisors (see below), whose sum is σ = 26714006784. Its totient is φ = 24902866560.

The previous prime is 25806078031. The next prime is 25806078079. The reversal of 25806078061 is 16087060852.

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

It is a cyclic number.

It is not a de Polignac number, because 25806078061 - 2⁷ = 25806077933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25806077999 and 25806078017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25806078031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168171 + ... + 1190056.

It is an arithmetic number, because the mean of its divisors is an integer number (3339250848).

Almost surely, 2^25806078061 is an apocalyptic number.

It is an amenable number.

25806078061 is a deficient number, since it is larger than the sum of its proper divisors (907928723).

25806078061 is a wasteful number, since it uses less digits than its factorization.

25806078061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358611.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 25806078061 in words is "twenty-five billion, eight hundred six million, seventy-eight thousand, sixty-one".