12125587 has 2 divisors, whose sum is σ = 12125588. Its totient is φ = 12125586.

The previous prime is 12125569. The next prime is 12125599. The reversal of 12125587 is 78552121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12125587 is a prime.

It is not a weakly prime, because it can be changed into another prime (12125887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6062793 + 6062794.

It is an arithmetic number, because the mean of its divisors is an integer number (6062794).

Almost surely, 2^12125587 is an apocalyptic number.

12125587 is a deficient number, since it is larger than the sum of its proper divisors (1).

12125587 is an equidigital number, since it uses as much as digits as its factorization.

12125587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600, while the sum is 31.

The square root of 12125587 is about 3482.1813565637. The cubic root of 12125587 is about 229.7387518899.

The spelling of 12125587 in words is "twelve million, one hundred twenty-five thousand, five hundred eighty-seven".