25829477832440 has 16 divisors (see below), whose sum is σ = 58116325123080. Its totient is φ = 10331791132960.

The previous prime is 25829477832377. The next prime is 25829477832443. The reversal of 25829477832440 is 4423877492852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25829477832443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322868472866 + ... + 322868472945.

Almost surely, 2^{25829477832440} is an apocalyptic number.

25829477832440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25829477832440 is an abundant number, since it is smaller than the sum of its proper divisors (32286847290640).

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

25829477832440 is a wasteful number, since it uses less digits than its factorization.

25829477832440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645736945822 (or 645736945818 counting only the distinct ones).

The product of its (nonzero) digits is 216760320, while the sum is 65.

The spelling of 25829477832440 in words is "twenty-five trillion, eight hundred twenty-nine billion, four hundred seventy-seven million, eight hundred thirty-two thousand, four hundred forty".