66060025 has 24 divisors (see below), whose sum is σ = 86226624. Its totient is φ = 50107200.

The previous prime is 66059969. The next prime is 66060031. The reversal of 66060025 is 52006066.

It is a de Polignac number, because none of the positive numbers 2^k-66060025 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74887 + ... + 75763.

It is an arithmetic number, because the mean of its divisors is an integer number (3592776).

Almost surely, 2^66060025 is an apocalyptic number.

It is an amenable number.

66060025 is a deficient number, since it is larger than the sum of its proper divisors (20166599).

66060025 is a wasteful number, since it uses less digits than its factorization.

66060025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 66060025 is about 8127.7318484310. The cubic root of 66060025 is about 404.2464777850.

The spelling of 66060025 in words is "sixty-six million, sixty thousand, twenty-five".