125554387 has 4 divisors (see below), whose sum is σ = 143490736. Its totient is φ = 107618040.

The previous prime is 125554327. The next prime is 125554393. The reversal of 125554387 is 783455521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125554387 - 2²³ = 117165779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125554327) 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, 8968164 + ... + 8968177.

It is an arithmetic number, because the mean of its divisors is an integer number (35872684).

Almost surely, 2^125554387 is an apocalyptic number.

125554387 is a deficient number, since it is larger than the sum of its proper divisors (17936349).

125554387 is an equidigital number, since it uses as much as digits as its factorization.

125554387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17936348.

The product of its digits is 168000, while the sum is 40.

The square root of 125554387 is about 11205.1053988796. The cubic root of 125554387 is about 500.7380925693.

The spelling of 125554387 in words is "one hundred twenty-five million, five hundred fifty-four thousand, three hundred eighty-seven".