25280814 has 16 divisors (see below), whose sum is σ = 54451152. Its totient is φ = 7778688.

The previous prime is 25280809. The next prime is 25280839. The reversal of 25280814 is 41808252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161979 + ... + 162134.

It is an arithmetic number, because the mean of its divisors is an integer number (3403197).

Almost surely, 2^25280814 is an apocalyptic number.

25280814 is an abundant number, since it is smaller than the sum of its proper divisors (29170338).

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

25280814 is a wasteful number, since it uses less digits than its factorization.

25280814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324131.

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 25280814 is about 5028.0029832927. The cubic root of 25280814 is about 293.4925068731.

Subtracting from 25280814 its sum of digits (30), we obtain a square (25280784 = 5028²).

The spelling of 25280814 in words is "twenty-five million, two hundred eighty thousand, eight hundred fourteen".