25135216 has 10 divisors (see below), whose sum is σ = 48699512. Its totient is φ = 12567600.

The previous prime is 25135213. The next prime is 25135237. The reversal of 25135216 is 61253152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25135213) 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 as a sum of consecutive naturals, namely, 785460 + ... + 785491.

Almost surely, 2^25135216 is an apocalyptic number.

It is an amenable number.

25135216 is a deficient number, since it is larger than the sum of its proper divisors (23564296).

25135216 is a wasteful number, since it uses less digits than its factorization.

25135216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570959 (or 1570953 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 25135216 is about 5013.5033659109. The cubic root of 25135216 is about 292.9279915610.

Adding to 25135216 its reverse (61253152), we get a palindrome (86388368).

The spelling of 25135216 in words is "twenty-five million, one hundred thirty-five thousand, two hundred sixteen".