66925690000 has 225 divisors, whose sum is σ = 176342828013. Its totient is φ = 24586848000.

The previous prime is 66925689967. The next prime is 66925690001. The reversal of 66925690000 is 9652966.

The square root of 66925690000 is 258700.

It is a perfect power (a square), and thus also a powerful number.

66925690000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 7 ways, for example, as 66104523664 + 821166336 = 257108^2 + 28656^2 .

It is a super-2 number, since 2×66925690000² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66925690001) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 336309901 + ... + 336310099.

Almost surely, 2^66925690000 is an apocalyptic number.

66925690000 is the 258700-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66925690000

66925690000 is an abundant number, since it is smaller than the sum of its proper divisors (109417138013).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66925690000 is an equidigital number, since it uses as much as digits as its factorization.

66925690000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 43.

The spelling of 66925690000 in words is "sixty-six billion, nine hundred twenty-five million, six hundred ninety thousand".