25169363431212 has 576 divisors, whose sum is σ = 82247569012224. Its totient is φ = 5885611683840.

The previous prime is 25169363431211. The next prime is 25169363431213. The reversal of 25169363431212 is 21213436396152.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25169363431211) and next prime (25169363431213).

It is not an unprimeable number, because it can be changed into a prime (25169363431211) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2650238848 + ... + 2650248344.

It is an arithmetic number, because the mean of its divisors is an integer number (142790918424).

Almost surely, 2^{25169363431212} is an apocalyptic number.

25169363431212 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 25169363431212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41123784506112).

25169363431212 is an abundant number, since it is smaller than the sum of its proper divisors (57078205581012).

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

25169363431212 is a wasteful number, since it uses less digits than its factorization.

25169363431212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10318 (or 10309 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 48.

The spelling of 25169363431212 in words is "twenty-five trillion, one hundred sixty-nine billion, three hundred sixty-three million, four hundred thirty-one thousand, two hundred twelve".