25578329782 has 8 divisors (see below), whose sum is σ = 39303287352. Its totient is φ = 12477234000.

The previous prime is 25578329747. The next prime is 25578329789. The reversal of 25578329782 is 28792387552.

25578329782 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25578329789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155965344 + ... + 155965507.

It is an arithmetic number, because the mean of its divisors is an integer number (4912910919).

Almost surely, 2^25578329782 is an apocalyptic number.

25578329782 is a deficient number, since it is larger than the sum of its proper divisors (13724957570).

25578329782 is a wasteful number, since it uses less digits than its factorization.

25578329782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311930894.

The product of its digits is 16934400, while the sum is 58.

The spelling of 25578329782 in words is "twenty-five billion, five hundred seventy-eight million, three hundred twenty-nine thousand, seven hundred eighty-two".