25566122650 has 48 divisors (see below), whose sum is σ = 49736602368. Its totient is φ = 9758936000.

The previous prime is 25566122641. The next prime is 25566122671. The reversal of 25566122650 is 5622166552.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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 23 ways as a sum of consecutive naturals, for example, 469860 + ... + 521440.

It is an arithmetic number, because the mean of its divisors is an integer number (1036179216).

Almost surely, 2^25566122650 is an apocalyptic number.

25566122650 is a deficient number, since it is larger than the sum of its proper divisors (24170479718).

25566122650 is a wasteful number, since it uses less digits than its factorization.

25566122650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52047 (or 52042 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 25566122650 in words is "twenty-five billion, five hundred sixty-six million, one hundred twenty-two thousand, six hundred fifty".