25500073016 has 64 divisors (see below), whose sum is σ = 52956288000. Its totient is φ = 11415116160.

The previous prime is 25500073013. The next prime is 25500073051. The reversal of 25500073016 is 61037000552.

It is a self number, because there is not a number n which added to its sum of digits gives 25500073016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25500073013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1593905 + ... + 1609823.

It is an arithmetic number, because the mean of its divisors is an integer number (827442000).

Almost surely, 2^25500073016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25500073016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26478144000).

25500073016 is an abundant number, since it is smaller than the sum of its proper divisors (27456214984).

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

25500073016 is a wasteful number, since it uses less digits than its factorization.

25500073016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16212 (or 16208 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

Adding to 25500073016 its reverse (61037000552), we get a palindrome (86537073568).

The spelling of 25500073016 in words is "twenty-five billion, five hundred million, seventy-three thousand, sixteen".