125816 has 8 divisors (see below), whose sum is σ = 235920. Its totient is φ = 62904.

The previous prime is 125813. The next prime is 125821. The reversal of 125816 is 618521.

It is a tau number, because it is divible by the number of its divisors (8).

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 125791 and 125800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7856 + ... + 7871.

It is an arithmetic number, because the mean of its divisors is an integer number (29490).

2¹²⁵⁸¹⁶ is an apocalyptic number.

It is an amenable number.

125816 is a deficient number, since it is larger than the sum of its proper divisors (110104).

125816 is a wasteful number, since it uses less digits than its factorization.

125816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15733 (or 15729 counting only the distinct ones).

The product of its digits is 480, while the sum is 23.

The square root of 125816 is about 354.7055116572. The cubic root of 125816 is about 50.1085641061.

The spelling of 125816 in words is "one hundred twenty-five thousand, eight hundred sixteen".