25297216 has 28 divisors (see below), whose sum is σ = 57371488. Its totient is φ = 10841472.

The previous prime is 25297213. The next prime is 25297231. The reversal of 25297216 is 61279252.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25297213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27786 + ... + 28681.

Almost surely, 2^25297216 is an apocalyptic number.

It is an amenable number.

25297216 is an abundant number, since it is smaller than the sum of its proper divisors (32074272).

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

25297216 is an equidigital number, since it uses as much as digits as its factorization.

25297216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56486 (or 56476 counting only the distinct ones).

The product of its digits is 15120, while the sum is 34.

The square root of 25297216 is about 5029.6337838853. The cubic root of 25297216 is about 293.5559650540. Note that the first 3 decimals are identical.

The spelling of 25297216 in words is "twenty-five million, two hundred ninety-seven thousand, two hundred sixteen".