125685653 has 4 divisors (see below), whose sum is σ = 126337068. Its totient is φ = 125034240.

The previous prime is 125685649. The next prime is 125685667. The reversal of 125685653 is 356586521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 356586521 = 31 ⋅11502791.

It can be written as a sum of positive squares in 2 ways, for example, as 27636049 + 98049604 = 5257^2 + 9902^2 .

It is a cyclic number.

It is not a de Polignac number, because 125685653 - 2² = 125685649 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 125685653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125685613) 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, 325418 + ... + 325803.

It is an arithmetic number, because the mean of its divisors is an integer number (31584267).

Almost surely, 2^125685653 is an apocalyptic number.

It is an amenable number.

125685653 is a deficient number, since it is larger than the sum of its proper divisors (651415).

125685653 is an equidigital number, since it uses as much as digits as its factorization.

125685653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651414.

The product of its digits is 216000, while the sum is 41.

The square root of 125685653 is about 11210.9612879539. The cubic root of 125685653 is about 500.9125375373.

The spelling of 125685653 in words is "one hundred twenty-five million, six hundred eighty-five thousand, six hundred fifty-three".