66933425 has 12 divisors (see below), whose sum is σ = 89382300. Its totient is φ = 49427520.

The previous prime is 66933401. The next prime is 66933431. The reversal of 66933425 is 52433966.

It can be written as a sum of positive squares in 6 ways, for example, as 16224784 + 50708641 = 4028^2 + 7121^2 .

It is not a de Polignac number, because 66933425 - 2⁸ = 66933169 is a prime.

It is a hoax number, since the sum of its digits (38) 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, 102650 + ... + 103299.

It is an arithmetic number, because the mean of its divisors is an integer number (7448525).

Almost surely, 2^66933425 is an apocalyptic number.

66933425 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66933425 is a deficient number, since it is larger than the sum of its proper divisors (22448875).

66933425 is a wasteful number, since it uses less digits than its factorization.

66933425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205972 (or 205967 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 66933425 is about 8181.2850457615. The cubic root of 66933425 is about 406.0202393107.

The spelling of 66933425 in words is "sixty-six million, nine hundred thirty-three thousand, four hundred twenty-five".