125636087 has 4 divisors (see below), whose sum is σ = 129688896. Its totient is φ = 121583280.

The previous prime is 125636081. The next prime is 125636089. The reversal of 125636087 is 780636521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780636521 = 7 ⋅111519503.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125636087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125636087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125636081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026358 + ... + 2026419.

It is an arithmetic number, because the mean of its divisors is an integer number (32422224).

Almost surely, 2^125636087 is an apocalyptic number.

125636087 is a deficient number, since it is larger than the sum of its proper divisors (4052809).

125636087 is an equidigital number, since it uses as much as digits as its factorization.

125636087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052808.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 125636087 is about 11208.7504655961. The cubic root of 125636087 is about 500.8466814518.

The spelling of 125636087 in words is "one hundred twenty-five million, six hundred thirty-six thousand, eighty-seven".