136571687925 has 72 divisors (see below), whose sum is σ = 248670494784. Its totient is φ = 66004139520.

The previous prime is 136571687893. The next prime is 136571687927. The reversal of 136571687925 is 529786175631.

It is not a de Polignac number, because 136571687925 - 2⁵ = 136571687893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136571687927) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 513069 + ... + 732381.

It is an arithmetic number, because the mean of its divisors is an integer number (3453756872).

Almost surely, 2^136571687925 is an apocalyptic number.

136571687925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136571687925 is a deficient number, since it is larger than the sum of its proper divisors (112098806859).

136571687925 is a wasteful number, since it uses less digits than its factorization.

136571687925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219387 (or 219363 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 60.

The spelling of 136571687925 in words is "one hundred thirty-six billion, five hundred seventy-one million, six hundred eighty-seven thousand, nine hundred twenty-five".