67575781725 has 12 divisors (see below), whose sum is σ = 111725292576. Its totient is φ = 36040416880.

The previous prime is 67575781709. The next prime is 67575781751. The reversal of 67575781725 is 52718757576.

It is a happy number.

It is not a de Polignac number, because 67575781725 - 2⁴ = 67575781709 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450505137 + ... + 450505286.

It is an arithmetic number, because the mean of its divisors is an integer number (9310441048).

Almost surely, 2^67575781725 is an apocalyptic number.

It is an amenable number.

67575781725 is a deficient number, since it is larger than the sum of its proper divisors (44149510851).

67575781725 is a wasteful number, since it uses less digits than its factorization.

67575781725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901010436 (or 901010431 counting only the distinct ones).

The product of its digits is 28812000, while the sum is 60.

The spelling of 67575781725 in words is "sixty-seven billion, five hundred seventy-five million, seven hundred eighty-one thousand, seven hundred twenty-five".