125403345 has 12 divisors (see below), whose sum is σ = 217365876. Its totient is φ = 66881760.

The previous prime is 125403319. The next prime is 125403391. The reversal of 125403345 is 543304521.

It can be written as a sum of positive squares in 2 ways, for example, as 51322896 + 74080449 = 7164^2 + 8607^2 .

It is not a de Polignac number, because 125403345 - 2⁶ = 125403281 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 1393326 + ... + 1393415.

It is an arithmetic number, because the mean of its divisors is an integer number (18113823).

Almost surely, 2^125403345 is an apocalyptic number.

125403345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125403345 is a deficient number, since it is larger than the sum of its proper divisors (91962531).

125403345 is a wasteful number, since it uses less digits than its factorization.

125403345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786752 (or 2786749 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 125403345 is about 11198.3634965114. The cubic root of 125403345 is about 500.5372159247.

Adding to 125403345 its reverse (543304521), we get a palindrome (668707866).

The spelling of 125403345 in words is "one hundred twenty-five million, four hundred three thousand, three hundred forty-five".