66033425 has 6 divisors (see below), whose sum is σ = 81881478. Its totient is φ = 52826720.

The previous prime is 66033397. The next prime is 66033427. The reversal of 66033425 is 52433066.

It can be written as a sum of positive squares in 3 ways, for example, as 2289169 + 63744256 = 1513^2 + 7984^2 .

It is not a de Polignac number, because 66033425 - 2⁶ = 66033361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66033427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1320644 + ... + 1320693.

It is an arithmetic number, because the mean of its divisors is an integer number (13646913).

Almost surely, 2^66033425 is an apocalyptic number.

It is an amenable number.

66033425 is a deficient number, since it is larger than the sum of its proper divisors (15848053).

66033425 is a wasteful number, since it uses less digits than its factorization.

66033425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2641347 (or 2641342 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 66033425 is about 8126.0953107873. The cubic root of 66033425 is about 404.1922119870.

The spelling of 66033425 in words is "sixty-six million, thirty-three thousand, four hundred twenty-five".