13425631785 has 48 divisors (see below), whose sum is σ = 23897400384. Its totient is φ = 6968820096.

The previous prime is 13425631763. The next prime is 13425631811. The reversal of 13425631785 is 58713652431.

It is a happy number.

13425631785 is a `hidden beast` number, since 1 + 3 + 4 + 2 + 5 + 631 + 7 + 8 + 5 = 666.

It is not a de Polignac number, because 13425631785 - 2⁸ = 13425631529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 13425631785.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 535347 + ... + 559863.

It is an arithmetic number, because the mean of its divisors is an integer number (497862508).

Almost surely, 2^13425631785 is an apocalyptic number.

13425631785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13425631785 is a deficient number, since it is larger than the sum of its proper divisors (10471768599).

13425631785 is a wasteful number, since it uses less digits than its factorization.

13425631785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24854 (or 24851 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The spelling of 13425631785 in words is "thirteen billion, four hundred twenty-five million, six hundred thirty-one thousand, seven hundred eighty-five".