25123216 has 20 divisors (see below), whose sum is σ = 49476124. Its totient is φ = 12355200.

The previous prime is 25123211. The next prime is 25123243. The reversal of 25123216 is 61232152.

It can be written as a sum of positive squares in 2 ways, for example, as 7817616 + 17305600 = 2796^2 + 4160^2 .

It is not an unprimeable number, because it can be changed into a prime (25123211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11895 + ... + 13846.

Almost surely, 2^25123216 is an apocalyptic number.

It is an amenable number.

25123216 is a deficient number, since it is larger than the sum of its proper divisors (24352908).

25123216 is a wasteful number, since it uses less digits than its factorization.

25123216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25810 (or 25804 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 25123216 is about 5012.3064551162. The cubic root of 25123216 is about 292.8813677930.

Adding to 25123216 its reverse (61232152), we get a palindrome (86355368).

The spelling of 25123216 in words is "twenty-five million, one hundred twenty-three thousand, two hundred sixteen".