125820028 has 24 divisors (see below), whose sum is σ = 230217120. Its totient is φ = 60054720.

The previous prime is 125820007. The next prime is 125820029. The reversal of 125820028 is 820028521.

It is a junction number, because it is equal to n+sod(n) for n = 125819978 and 125820005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125820029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59778 + ... + 61846.

It is an arithmetic number, because the mean of its divisors is an integer number (9592380).

Almost surely, 2^125820028 is an apocalyptic number.

It is an amenable number.

125820028 is a deficient number, since it is larger than the sum of its proper divisors (104397092).

125820028 is a wasteful number, since it uses less digits than its factorization.

125820028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 125820028 is about 11216.9527056148. The cubic root of 125820028 is about 501.0909884238.

Adding to 125820028 its reverse (820028521), we get a palindrome (945848549).

The spelling of 125820028 in words is "one hundred twenty-five million, eight hundred twenty thousand, twenty-eight".