25506330 has 16 divisors (see below), whose sum is σ = 61215264. Its totient is φ = 6801680.

The previous prime is 25506329. The next prime is 25506337. The reversal of 25506330 is 3360552.

It is a self number, because there is not a number n which added to its sum of digits gives 25506330.

It is not an unprimeable number, because it can be changed into a prime (25506337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425076 + ... + 425135.

It is an arithmetic number, because the mean of its divisors is an integer number (3825954).

Almost surely, 2^25506330 is an apocalyptic number.

25506330 is an abundant number, since it is smaller than the sum of its proper divisors (35708934).

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

25506330 is a wasteful number, since it uses less digits than its factorization.

25506330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850221.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 25506330 is about 5050.3791936844. The cubic root of 25506330 is about 294.3626188778.

Adding to 25506330 its reverse (3360552), we get a palindrome (28866882).

The spelling of 25506330 in words is "twenty-five million, five hundred six thousand, three hundred thirty".