25530786 has 24 divisors (see below), whose sum is σ = 55421184. Its totient is φ = 8494200.

The previous prime is 25530781. The next prime is 25530797. The reversal of 25530786 is 68703552.

It is a self number, because there is not a number n which added to its sum of digits gives 25530786.

It is not an unprimeable number, because it can be changed into a prime (25530781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12111 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (2309216).

Almost surely, 2^25530786 is an apocalyptic number.

25530786 is an abundant number, since it is smaller than the sum of its proper divisors (29890398).

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

25530786 is a wasteful number, since it uses less digits than its factorization.

25530786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2686 (or 2683 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25530786 is about 5052.7998179227. The cubic root of 25530786 is about 294.4566691601.

The spelling of 25530786 in words is "twenty-five million, five hundred thirty thousand, seven hundred eighty-six".