125829638 has 16 divisors (see below), whose sum is σ = 207945360. Its totient is φ = 56628000.

The previous prime is 125829629. The next prime is 125829677. The reversal of 125829638 is 836928521.

It is a super-2 number, since 2×125829638² = 31666195598422088, which contains 22 as substring.

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 (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26093 + ... + 30536.

It is an arithmetic number, because the mean of its divisors is an integer number (12996585).

Almost surely, 2^125829638 is an apocalyptic number.

125829638 is a deficient number, since it is larger than the sum of its proper divisors (82115722).

125829638 is a wasteful number, since it uses less digits than its factorization.

125829638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56743.

The product of its digits is 207360, while the sum is 44.

The square root of 125829638 is about 11217.3810668979. The cubic root of 125829638 is about 501.1037456980.

The spelling of 125829638 in words is "one hundred twenty-five million, eight hundred twenty-nine thousand, six hundred thirty-eight".