25133216 has 12 divisors (see below), whose sum is σ = 49481082. Its totient is φ = 12566592.

The previous prime is 25133209. The next prime is 25133221. The reversal of 25133216 is 61233152.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 2131600 = 4796^2 + 1460^2 .

It is a super-4 number, since 4×25133216⁴ (a number of 31 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25133191 and 25133200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392675 + ... + 392738.

Almost surely, 2^25133216 is an apocalyptic number.

It is an amenable number.

25133216 is a deficient number, since it is larger than the sum of its proper divisors (24347866).

25133216 is an equidigital number, since it uses as much as digits as its factorization.

25133216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785423 (or 785415 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 25133216 is about 5013.3039006228. The cubic root of 25133216 is about 292.9202219637.

Adding to 25133216 its reverse (61233152), we get a palindrome (86366368).

It can be divided in two parts, 2513 and 3216, that multiplied together give a palindrome (8081808).

The spelling of 25133216 in words is "twenty-five million, one hundred thirty-three thousand, two hundred sixteen".