125891425 has 18 divisors (see below), whose sum is σ = 171591014. Its totient is φ = 91555200.

The previous prime is 125891413. The next prime is 125891429. The reversal of 125891425 is 524198521.

It can be written as a sum of positive squares in 3 ways, for example, as 44729344 + 81162081 = 6688^2 + 9009^2 .

It is a de Polignac number, because none of the positive numbers 2^k-125891425 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125891429) by changing a digit.

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 17 ways as a sum of consecutive naturals, for example, 17784 + ... + 23833.

Almost surely, 2^125891425 is an apocalyptic number.

It is an amenable number.

125891425 is a deficient number, since it is larger than the sum of its proper divisors (45699589).

125891425 is a wasteful number, since it uses less digits than its factorization.

125891425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41649 (or 41633 counting only the distinct ones).

The product of its digits is 28800, while the sum is 37.

The square root of 125891425 is about 11220.1348031118. The cubic root of 125891425 is about 501.1857524261.

The spelling of 125891425 in words is "one hundred twenty-five million, eight hundred ninety-one thousand, four hundred twenty-five".