25178784312 has 64 divisors (see below), whose sum is σ = 69377414400. Its totient is φ = 7551267840.

The previous prime is 25178784307. The next prime is 25178784313. The reversal of 25178784312 is 21348787152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25178784313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466012 + ... + 517227.

It is an arithmetic number, because the mean of its divisors is an integer number (1084022100).

Almost surely, 2^25178784312 is an apocalyptic number.

25178784312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25178784312 is an abundant number, since it is smaller than the sum of its proper divisors (44198630088).

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

25178784312 is a wasteful number, since it uses less digits than its factorization.

25178784312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983356 (or 983352 counting only the distinct ones).

The product of its digits is 752640, while the sum is 48.

The spelling of 25178784312 in words is "twenty-five billion, one hundred seventy-eight million, seven hundred eighty-four thousand, three hundred twelve".