125404125 has 128 divisors (see below), whose sum is σ = 268849152. Its totient is φ = 50400000.

The previous prime is 125404061. The next prime is 125404127. The reversal of 125404125 is 521404521.

It is not a de Polignac number, because 125404125 - 2⁶ = 125404061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125404095 and 125404104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125404127) 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 127 ways as a sum of consecutive naturals, for example, 1241575 + ... + 1241675.

It is an arithmetic number, because the mean of its divisors is an integer number (2100384).

Almost surely, 2^125404125 is an apocalyptic number.

125404125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125404125 is an abundant number, since it is smaller than the sum of its proper divisors (143445027).

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

125404125 is a wasteful number, since it uses less digits than its factorization.

125404125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 125404125 is about 11198.3983229746. The cubic root of 125404125 is about 500.5382536913.

Adding to 125404125 its reverse (521404521), we get a palindrome (646808646).

The spelling of 125404125 in words is "one hundred twenty-five million, four hundred four thousand, one hundred twenty-five".