125513020 has 12 divisors (see below), whose sum is σ = 263577384. Its totient is φ = 50205200.

The previous prime is 125513009. The next prime is 125513029. The reversal of 125513020 is 20315521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125513029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3137806 + ... + 3137845.

It is an arithmetic number, because the mean of its divisors is an integer number (21964782).

Almost surely, 2^125513020 is an apocalyptic number.

125513020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125513020 is an abundant number, since it is smaller than the sum of its proper divisors (138064364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125513020 is a wasteful number, since it uses less digits than its factorization.

125513020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6275660 (or 6275658 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 125513020 is about 11203.2593471721. The cubic root of 125513020 is about 500.6830930096.

Adding to 125513020 its reverse (20315521), we get a palindrome (145828541).

The spelling of 125513020 in words is "one hundred twenty-five million, five hundred thirteen thousand, twenty".