25672220 has 24 divisors (see below), whose sum is σ = 61613664. Its totient is φ = 8801856.

The previous prime is 25672217. The next prime is 25672243. The reversal of 25672220 is 2227652.

It is a self number, because there is not a number n which added to its sum of digits gives 25672220.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 91547 + ... + 91826.

It is an arithmetic number, because the mean of its divisors is an integer number (2567236).

Almost surely, 2^25672220 is an apocalyptic number.

25672220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25672220 is an abundant number, since it is smaller than the sum of its proper divisors (35941444).

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

25672220 is a wasteful number, since it uses less digits than its factorization.

25672220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183389 (or 183387 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 25672220 is about 5066.7760953095. The cubic root of 25672220 is about 294.9994062997. Note that the first 3 decimals are identical.

Adding to 25672220 its reverse (2227652), we get a palindrome (27899872).

The spelling of 25672220 in words is "twenty-five million, six hundred seventy-two thousand, two hundred twenty".