25253218 has 16 divisors (see below), whose sum is σ = 39709440. Its totient is φ = 12021856.

The previous prime is 25253213. The next prime is 25253237. The reversal of 25253218 is 81235252.

It is not an unprimeable number, because it can be changed into a prime (25253213) 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, 9846 + ... + 12142.

It is an arithmetic number, because the mean of its divisors is an integer number (2481840).

Almost surely, 2^25253218 is an apocalyptic number.

25253218 is a deficient number, since it is larger than the sum of its proper divisors (14456222).

25253218 is a wasteful number, since it uses less digits than its factorization.

25253218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561.

The product of its digits is 4800, while the sum is 28.

The square root of 25253218 is about 5025.2580033268. The cubic root of 25253218 is about 293.3856779291.

The spelling of 25253218 in words is "twenty-five million, two hundred fifty-three thousand, two hundred eighteen".