125433638 has 16 divisors (see below), whose sum is σ = 206758224. Its totient is φ = 56597760.

The previous prime is 125433619. The next prime is 125433661. The reversal of 125433638 is 836334521.

It is a junction number, because it is equal to n+sod(n) for n = 125433598 and 125433607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17795 + ... + 23822.

It is an arithmetic number, because the mean of its divisors is an integer number (12922389).

Almost surely, 2^125433638 is an apocalyptic number.

125433638 is the 5987-th centered heptagonal number.

125433638 is a deficient number, since it is larger than the sum of its proper divisors (81324586).

125433638 is a wasteful number, since it uses less digits than its factorization.

125433638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41767.

The product of its digits is 51840, while the sum is 35.

The square root of 125433638 is about 11199.7159785416. The cubic root of 125433638 is about 500.5775166921.

The spelling of 125433638 in words is "one hundred twenty-five million, four hundred thirty-three thousand, six hundred thirty-eight".