25530606 has 32 divisors (see below), whose sum is σ = 57542400. Its totient is φ = 8389080.

The previous prime is 25530599. The next prime is 25530607. The reversal of 25530606 is 60603552.

25530606 is a `hidden beast` number, since 2 + 5 + 53 + 0 + 606 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 25530606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25530607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505 + ... + 7163.

It is an arithmetic number, because the mean of its divisors is an integer number (1798200).

Almost surely, 2^25530606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25530606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28771200).

25530606 is an abundant number, since it is smaller than the sum of its proper divisors (32011794).

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

25530606 is a wasteful number, since it uses less digits than its factorization.

25530606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6741 (or 6735 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 25530606 is about 5052.7820059844. The cubic root of 25530606 is about 294.4559771547.

The spelling of 25530606 in words is "twenty-five million, five hundred thirty thousand, six hundred six".