25478335485 has 32 divisors (see below), whose sum is σ = 45315089280. Its totient is φ = 13582364544.

The previous prime is 25478335409. The next prime is 25478335499. The reversal of 25478335485 is 58453387452.

25478335485 is a `hidden beast` number, since 2 + 54 + 7 + 83 + 35 + 485 = 666.

It is not a de Polignac number, because 25478335485 - 2⁷ = 25478335357 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269014 + ... + 351176.

It is an arithmetic number, because the mean of its divisors is an integer number (1416096540).

Almost surely, 2^25478335485 is an apocalyptic number.

It is an amenable number.

25478335485 is a deficient number, since it is larger than the sum of its proper divisors (19836753795).

25478335485 is a wasteful number, since it uses less digits than its factorization.

25478335485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84474 (or 84468 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 54.

The spelling of 25478335485 in words is "twenty-five billion, four hundred seventy-eight million, three hundred thirty-five thousand, four hundred eighty-five".