125683634 has 4 divisors (see below), whose sum is σ = 188525454. Its totient is φ = 62841816.

The previous prime is 125683633. The next prime is 125683639. The reversal of 125683634 is 436386521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436386521 = 23 ⋅18973327.

It can be written as a sum of positive squares in only one way, i.e., 124255609 + 1428025 = 11147^2 + 1195^2 .

It is not an unprimeable number, because it can be changed into a prime (125683633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31420907 + ... + 31420910.

Almost surely, 2^125683634 is an apocalyptic number.

125683634 is a deficient number, since it is larger than the sum of its proper divisors (62841820).

125683634 is an equidigital number, since it uses as much as digits as its factorization.

125683634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62841819.

The product of its digits is 103680, while the sum is 38.

The square root of 125683634 is about 11210.8712417903. The cubic root of 125683634 is about 500.9098553223.

The spelling of 125683634 in words is "one hundred twenty-five million, six hundred eighty-three thousand, six hundred thirty-four".