25550766 has 12 divisors (see below), whose sum is σ = 55360032. Its totient is φ = 8516916.

The previous prime is 25550761. The next prime is 25550783. The reversal of 25550766 is 66705552.

It is a self number, because there is not a number n which added to its sum of digits gives 25550766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25550761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 709726 + ... + 709761.

It is an arithmetic number, because the mean of its divisors is an integer number (4613336).

Almost surely, 2^25550766 is an apocalyptic number.

25550766 is an abundant number, since it is smaller than the sum of its proper divisors (29809266).

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

25550766 is a wasteful number, since it uses less digits than its factorization.

25550766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419495 (or 1419492 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 25550766 is about 5054.7765529250. The cubic root of 25550766 is about 294.5334615498.

The spelling of 25550766 in words is "twenty-five million, five hundred fifty thousand, seven hundred sixty-six".