66146425 has 12 divisors (see below), whose sum is σ = 82194640. Its totient is φ = 52805520.

The previous prime is 66146401. The next prime is 66146441. The reversal of 66146425 is 52464166.

It is not a de Polignac number, because 66146425 - 2⁵ = 66146393 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10546 + ... + 15604.

Almost surely, 2^66146425 is an apocalyptic number.

It is an amenable number.

66146425 is a deficient number, since it is larger than the sum of its proper divisors (16048215).

66146425 is a wasteful number, since it uses less digits than its factorization.

66146425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5592 (or 5587 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

The square root of 66146425 is about 8133.0452476302. The cubic root of 66146425 is about 404.4226391864.

The spelling of 66146425 in words is "sixty-six million, one hundred forty-six thousand, four hundred twenty-five".