125168487 has 4 divisors (see below), whose sum is σ = 166891320. Its totient is φ = 83445656.

The previous prime is 125168479. The next prime is 125168497. The reversal of 125168487 is 784861521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784861521 = 3 ⋅261620507.

It is a cyclic number.

It is not a de Polignac number, because 125168487 - 2³ = 125168479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125168497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20861412 + ... + 20861417.

It is an arithmetic number, because the mean of its divisors is an integer number (41722830).

Almost surely, 2^125168487 is an apocalyptic number.

125168487 is a deficient number, since it is larger than the sum of its proper divisors (41722833).

125168487 is an equidigital number, since it uses as much as digits as its factorization.

125168487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41722832.

The product of its digits is 107520, while the sum is 42.

The square root of 125168487 is about 11187.8723178270. The cubic root of 125168487 is about 500.2245484742.

The spelling of 125168487 in words is "one hundred twenty-five million, one hundred sixty-eight thousand, four hundred eighty-seven".