25218272 has 12 divisors (see below), whose sum is σ = 49648536. Its totient is φ = 12609120.

The previous prime is 25218269. The next prime is 25218287. The reversal of 25218272 is 27281252.

It is a super-2 number, since 2×25218272² = 1271922485331968, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394004 + ... + 394067.

It is an arithmetic number, because the mean of its divisors is an integer number (4137378).

Almost surely, 2^25218272 is an apocalyptic number.

It is an amenable number.

25218272 is a deficient number, since it is larger than the sum of its proper divisors (24430264).

25218272 is an equidigital number, since it uses as much as digits as its factorization.

25218272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788081 (or 788073 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 25218272 is about 5021.7797641872. The cubic root of 25218272 is about 293.2502841108.

The spelling of 25218272 in words is "twenty-five million, two hundred eighteen thousand, two hundred seventy-two".