66124025 has 24 divisors (see below), whose sum is σ = 90556704. Its totient is φ = 47494400.

The previous prime is 66124013. The next prime is 66124039. The reversal of 66124025 is 52042166.

It is not a de Polignac number, because 66124025 - 2²⁴ = 49346809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66123985 and 66124003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21377 + ... + 24273.

It is an arithmetic number, because the mean of its divisors is an integer number (3773196).

Almost surely, 2^66124025 is an apocalyptic number.

It is an amenable number.

66124025 is a deficient number, since it is larger than the sum of its proper divisors (24432679).

66124025 is a wasteful number, since it uses less digits than its factorization.

66124025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001 (or 2996 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 66124025 is about 8131.6680330668. The cubic root of 66124025 is about 404.3769824489.

The spelling of 66124025 in words is "sixty-six million, one hundred twenty-four thousand, twenty-five".