66341025 has 45 divisors (see below), whose sum is σ = 123569193. Its totient is φ = 35186400.

The previous prime is 66341003. The next prime is 66341029. The reversal of 66341025 is 52014366.

The square root of 66341025 is 8145.

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

66341025 is a `hidden beast` number, since 6 + 634 + 1 + 0 + 25 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35605089 + 30735936 = 5967^2 + 5544^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 66341025 - 2¹⁵ = 66308257 is a prime.

It is a super-2 number, since 2×66341025² = 8802263196101250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66341025.

It is not an unprimeable number, because it can be changed into a prime (66341029) 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, 366435 + ... + 366615.

Almost surely, 2^66341025 is an apocalyptic number.

66341025 is the 8145-th square number.

66341025 is the 4073-rd centered octagonal number.

It is an amenable number.

66341025 is a deficient number, since it is larger than the sum of its proper divisors (57228168).

66341025 is an equidigital number, since it uses as much as digits as its factorization.

66341025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The cubic root of 66341025 is about 404.8188490269.

The spelling of 66341025 in words is "sixty-six million, three hundred forty-one thousand, twenty-five".