25025316516 has 36 divisors (see below), whose sum is σ = 63423639552. Its totient is φ = 8319987504.

The previous prime is 25025316469. The next prime is 25025316517. The reversal of 25025316516 is 61561352052.

25025316516 is a `hidden beast` number, since 2 + 50 + 2 + 531 + 65 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (25025316517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 893716 + ... + 921291.

Almost surely, 2^25025316516 is an apocalyptic number.

It is an amenable number.

25025316516 is an abundant number, since it is smaller than the sum of its proper divisors (38398323036).

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

25025316516 is a wasteful number, since it uses less digits than its factorization.

25025316516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815400 (or 1815395 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 25025316516 its reverse (61561352052), we get a palindrome (86586668568).

The spelling of 25025316516 in words is "twenty-five billion, twenty-five million, three hundred sixteen thousand, five hundred sixteen".