25535689312 has 48 divisors (see below), whose sum is σ = 60479274240. Its totient is φ = 10367872128.

The previous prime is 25535689243. The next prime is 25535689337. The reversal of 25535689312 is 21398653552.

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, 2995708 + ... + 3004219.

It is an arithmetic number, because the mean of its divisors is an integer number (1259984880).

Almost surely, 2^25535689312 is an apocalyptic number.

It is an amenable number.

25535689312 is an abundant number, since it is smaller than the sum of its proper divisors (34943584928).

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

25535689312 is a wasteful number, since it uses less digits than its factorization.

25535689312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5999963 (or 5999955 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 49.

The spelling of 25535689312 in words is "twenty-five billion, five hundred thirty-five million, six hundred eighty-nine thousand, three hundred twelve".