66225895 has 8 divisors (see below), whose sum is σ = 79728480. Its totient is φ = 52809120.

The previous prime is 66225869. The next prime is 66225919. The reversal of 66225895 is 59852266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66225895 - 2¹¹ = 66223847 is a prime.

It is a super-3 number, since 3×66225895³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19740 + ... + 22849.

It is an arithmetic number, because the mean of its divisors is an integer number (9966060).

Almost surely, 2^66225895 is an apocalyptic number.

66225895 is a deficient number, since it is larger than the sum of its proper divisors (13502585).

66225895 is a wasteful number, since it uses less digits than its factorization.

66225895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42905.

The product of its digits is 259200, while the sum is 43.

The square root of 66225895 is about 8137.9294049531. The cubic root of 66225895 is about 404.5845355886.

The spelling of 66225895 in words is "sixty-six million, two hundred twenty-five thousand, eight hundred ninety-five".