25217316 has 36 divisors (see below), whose sum is σ = 64221612. Its totient is φ = 8342784.

The previous prime is 25217303. The next prime is 25217317. The reversal of 25217316 is 61371252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5503716 + 19713600 = 2346^2 + 4440^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 25217316.

It is not an unprimeable number, because it can be changed into a prime (25217317) 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, 2376 + ... + 7488.

Almost surely, 2^25217316 is an apocalyptic number.

It is an amenable number.

25217316 is an abundant number, since it is smaller than the sum of its proper divisors (39004296).

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

25217316 is a wasteful number, since it uses less digits than its factorization.

25217316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260 (or 5255 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 25217316 is about 5021.6845779081. The cubic root of 25217316 is about 293.2465784536.

Adding to 25217316 its reverse (61371252), we get a palindrome (86588568).

The spelling of 25217316 in words is "twenty-five million, two hundred seventeen thousand, three hundred sixteen".