25507416216 has 32 divisors (see below), whose sum is σ = 67519632240. Its totient is φ = 8002326528.

The previous prime is 25507416203. The next prime is 25507416239. The reversal of 25507416216 is 61261470552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31258681 + ... + 31259496.

Almost surely, 2^25507416216 is an apocalyptic number.

It is an amenable number.

25507416216 is an abundant number, since it is smaller than the sum of its proper divisors (42012216024).

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

25507416216 is a wasteful number, since it uses less digits than its factorization.

25507416216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62518203 (or 62518199 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

Adding to 25507416216 its reverse (61261470552), we get a palindrome (86768886768).

The spelling of 25507416216 in words is "twenty-five billion, five hundred seven million, four hundred sixteen thousand, two hundred sixteen".