25140216 has 64 divisors (see below), whose sum is σ = 66679200. Its totient is φ = 7884800.

The previous prime is 25140197. The next prime is 25140217. The reversal of 25140216 is 61204152.

It is a junction number, because it is equal to n+sod(n) for n = 25140192 and 25140201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140217) 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, 28096 + ... + 28976.

Almost surely, 2^25140216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25140216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33339600).

25140216 is an abundant number, since it is smaller than the sum of its proper divisors (41538984).

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

25140216 is a wasteful number, since it uses less digits than its factorization.

25140216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 25140216 is about 5014.0019944152. The cubic root of 25140216 is about 292.9474137514.

Adding to 25140216 its reverse (61204152), we get a palindrome (86344368).

The spelling of 25140216 in words is "twenty-five million, one hundred forty thousand, two hundred sixteen".