25566122652 has 48 divisors (see below), whose sum is σ = 68356296960. Its totient is φ = 7285324032.

The previous prime is 25566122641. The next prime is 25566122671. The reversal of 25566122652 is 25622166552.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 369693 + ... + 433364.

It is an arithmetic number, because the mean of its divisors is an integer number (1424089520).

Almost surely, 2^25566122652 is an apocalyptic number.

It is an amenable number.

25566122652 is an abundant number, since it is smaller than the sum of its proper divisors (42790174308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25566122652 is a wasteful number, since it uses less digits than its factorization.

25566122652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803450 (or 803448 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The spelling of 25566122652 in words is "twenty-five billion, five hundred sixty-six million, one hundred twenty-two thousand, six hundred fifty-two".