25369171212 has 432 divisors, whose sum is σ = 81307134720. Its totient is φ = 6117914880.

The previous prime is 25369171207. The next prime is 25369171231. The reversal of 25369171212 is 21217196352.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 60546739 + ... + 60547157.

It is an arithmetic number, because the mean of its divisors is an integer number (188210960).

Almost surely, 2^25369171212 is an apocalyptic number.

25369171212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25369171212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40653567360).

25369171212 is an abundant number, since it is smaller than the sum of its proper divisors (55937963508).

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

25369171212 is a wasteful number, since it uses less digits than its factorization.

25369171212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 502 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The spelling of 25369171212 in words is "twenty-five billion, three hundred sixty-nine million, one hundred seventy-one thousand, two hundred twelve".