125205320 has 32 divisors (see below), whose sum is σ = 283159800. Its totient is φ = 49824768.

The previous prime is 125205313. The next prime is 125205341. The reversal of 125205320 is 23502521.

It can be written as a sum of positive squares in 4 ways, for example, as 114875524 + 10329796 = 10718^2 + 3214^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 125205292 and 125205301.

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, 65 + ... + 15824.

Almost surely, 2^125205320 is an apocalyptic number.

125205320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125205320 is an abundant number, since it is smaller than the sum of its proper divisors (157954480).

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

125205320 is a wasteful number, since it uses less digits than its factorization.

125205320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16097 (or 16093 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 125205320 is about 11189.5183095610. The cubic root of 125205320 is about 500.2736102476.

Adding to 125205320 its reverse (23502521), we get a palindrome (148707841).

The spelling of 125205320 in words is "one hundred twenty-five million, two hundred five thousand, three hundred twenty".