66826925 has 24 divisors (see below), whose sum is σ = 92619072. Its totient is φ = 47408000.

The previous prime is 66826897. The next prime is 66826927. The reversal of 66826925 is 52962866.

It is not a de Polignac number, because 66826925 - 2²² = 62632621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66826927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8312 + ... + 14238.

It is an arithmetic number, because the mean of its divisors is an integer number (3859128).

Almost surely, 2^66826925 is an apocalyptic number.

It is an amenable number.

66826925 is a deficient number, since it is larger than the sum of its proper divisors (25792147).

66826925 is a wasteful number, since it uses less digits than its factorization.

66826925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989 (or 5984 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 66826925 is about 8174.7736971735. The cubic root of 66826925 is about 405.8047808910.

The spelling of 66826925 in words is "sixty-six million, eight hundred twenty-six thousand, nine hundred twenty-five".