125646634 has 8 divisors (see below), whose sum is σ = 189735300. Its totient is φ = 62401536.

The previous prime is 125646617. The next prime is 125646637. The reversal of 125646634 is 436646521.

It can be written as a sum of positive squares in 2 ways, for example, as 122213025 + 3433609 = 11055^2 + 1853^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 125646593 and 125646602.

It is not an unprimeable number, because it can be changed into a prime (125646637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210519 + ... + 211114.

Almost surely, 2^125646634 is an apocalyptic number.

125646634 is a deficient number, since it is larger than the sum of its proper divisors (64088666).

125646634 is a wasteful number, since it uses less digits than its factorization.

125646634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421784.

The product of its digits is 103680, while the sum is 37.

The square root of 125646634 is about 11209.2209363541. The cubic root of 125646634 is about 500.8606962206.

The spelling of 125646634 in words is "one hundred twenty-five million, six hundred forty-six thousand, six hundred thirty-four".