25000016 has 20 divisors (see below), whose sum is σ = 48515124. Its totient is φ = 12480000.

The previous prime is 25000009. The next prime is 25000033. The reversal of 25000016 is 61000052.

It can be written as a sum of positive squares in 2 ways, for example, as 40000 + 24960016 = 200^2 + 4996^2 .

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, 18566 + ... + 19866.

Almost surely, 2^25000016 is an apocalyptic number.

It is an amenable number.

25000016 is a deficient number, since it is larger than the sum of its proper divisors (23515108).

25000016 is a wasteful number, since it uses less digits than its factorization.

25000016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510 (or 2504 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 25000016 is about 5000.0015999997. The cubic root of 25000016 is about 292.4018362003.

Adding to 25000016 its reverse (61000052), we get a palindrome (86000068).

It can be divided in two parts, 250000 and 16, that multiplied together give a square (4000000 = 2000²).

The spelling of 25000016 in words is "twenty-five million, sixteen", and thus it is an aban number and an uban number.