25682065478 has 16 divisors (see below), whose sum is σ = 40792920624. Its totient is φ = 12084564480.

The previous prime is 25682065477. The next prime is 25682065501. The reversal of 25682065478 is 87456028652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25682065477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429473 + ... + 485603.

It is an arithmetic number, because the mean of its divisors is an integer number (2549557539).

Almost surely, 2^25682065478 is an apocalyptic number.

25682065478 is a deficient number, since it is larger than the sum of its proper divisors (15110855146).

25682065478 is a wasteful number, since it uses less digits than its factorization.

25682065478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69607.

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 25682065478 in words is "twenty-five billion, six hundred eighty-two million, sixty-five thousand, four hundred seventy-eight".