25672218 has 32 divisors (see below), whose sum is σ = 60322752. Its totient is φ = 7180800.

The previous prime is 25672217. The next prime is 25672243. The reversal of 25672218 is 81227652.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (25672217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14103 + ... + 15818.

It is an arithmetic number, because the mean of its divisors is an integer number (1885086).

Almost surely, 2^25672218 is an apocalyptic number.

25672218 is an abundant number, since it is smaller than the sum of its proper divisors (34650534).

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

25672218 is a wasteful number, since it uses less digits than its factorization.

25672218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29950.

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

The square root of 25672218 is about 5066.7758979454. The cubic root of 25672218 is about 294.9993986390. Note that the first 3 decimals are identical.

The spelling of 25672218 in words is "twenty-five million, six hundred seventy-two thousand, two hundred eighteen".