25216630 has 16 divisors (see below), whose sum is σ = 45447120. Its totient is φ = 10073952.

The previous prime is 25216613. The next prime is 25216657. The reversal of 25216630 is 3661252.

It is a junction number, because it is equal to n+sod(n) for n = 25216595 and 25216604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14992 + ... + 16588.

It is an arithmetic number, because the mean of its divisors is an integer number (2840445).

Almost surely, 2^25216630 is an apocalyptic number.

25216630 is a deficient number, since it is larger than the sum of its proper divisors (20230490).

25216630 is a wasteful number, since it uses less digits than its factorization.

25216630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 25216630 is about 5021.6162736713. The cubic root of 25216630 is about 293.2439193155.

Adding to 25216630 its reverse (3661252), we get a palindrome (28877882).

The spelling of 25216630 in words is "twenty-five million, two hundred sixteen thousand, six hundred thirty".