25216278 has 16 divisors (see below), whose sum is σ = 50896560. Its totient is φ = 8328096.

The previous prime is 25216273. The next prime is 25216291. The reversal of 25216278 is 87261252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25216273) 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, 18625 + ... + 19932.

It is an arithmetic number, because the mean of its divisors is an integer number (3181035).

Almost surely, 2^25216278 is an apocalyptic number.

25216278 is an abundant number, since it is smaller than the sum of its proper divisors (25680282).

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

25216278 is a wasteful number, since it uses less digits than its factorization.

25216278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38671.

The product of its digits is 13440, while the sum is 33.

The square root of 25216278 is about 5021.5812250724. The cubic root of 25216278 is about 293.2425548411.

The spelling of 25216278 in words is "twenty-five million, two hundred sixteen thousand, two hundred seventy-eight".