125405272 has 24 divisors (see below), whose sum is σ = 237926700. Its totient is φ = 61966784.

The previous prime is 125405249. The next prime is 125405297. The reversal of 125405272 is 272504521.

It is a self number, because there is not a number n which added to its sum of digits gives 125405272.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62379 + ... + 64357.

Almost surely, 2^125405272 is an apocalyptic number.

It is an amenable number.

125405272 is a deficient number, since it is larger than the sum of its proper divisors (112521428).

125405272 is an equidigital number, since it uses as much as digits as its factorization.

125405272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 125405272 is about 11198.4495355384. The cubic root of 125405272 is about 500.5397797327.

Adding to 125405272 its reverse (272504521), we get a palindrome (397909793).

The spelling of 125405272 in words is "one hundred twenty-five million, four hundred five thousand, two hundred seventy-two".