25006816 has 24 divisors (see below), whose sum is σ = 50931720. Its totient is φ = 12071808.

The previous prime is 25006789. The next prime is 25006853. The reversal of 25006816 is 61860052.

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 3 ways as a sum of consecutive naturals, for example, 12546 + ... + 14401.

It is an arithmetic number, because the mean of its divisors is an integer number (2122155).

Almost surely, 2^25006816 is an apocalyptic number.

It is an amenable number.

25006816 is an abundant number, since it is smaller than the sum of its proper divisors (25924904).

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

25006816 is a wasteful number, since it uses less digits than its factorization.

25006816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26986 (or 26978 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 25006816 is about 5000.6815535485. The cubic root of 25006816 is about 292.4283448799.

Adding to 25006816 its reverse (61860052), we get a palindrome (86866868).

It can be divided in two parts, 2500 and 6816, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 25006816 in words is "twenty-five million, six thousand, eight hundred sixteen".