25566240626155 has 16 divisors (see below), whose sum is σ = 30961908980640. Its totient is φ = 20264723949312.

The previous prime is 25566240626141. The next prime is 25566240626161. The reversal of 25566240626155 is 55162604266552.

It is a cyclic number.

It is not a de Polignac number, because 25566240626155 - 2¹⁹ = 25566240101867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25566240626096 and 25566240626105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17334847 + ... + 18751783.

It is an arithmetic number, because the mean of its divisors is an integer number (1935119311290).

Almost surely, 2^{25566240626155} is an apocalyptic number.

25566240626155 is a deficient number, since it is larger than the sum of its proper divisors (5395668354485).

25566240626155 is a wasteful number, since it uses less digits than its factorization.

25566240626155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450158.

The product of its (nonzero) digits is 25920000, while the sum is 55.

The spelling of 25566240626155 in words is "twenty-five trillion, five hundred sixty-six billion, two hundred forty million, six hundred twenty-six thousand, one hundred fifty-five".