164225465 has 4 divisors (see below), whose sum is σ = 197070564. Its totient is φ = 131380368.

The previous prime is 164225449. The next prime is 164225483. The reversal of 164225465 is 564522461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564522461 = 89 ⋅6342949.

It can be written as a sum of positive squares in 2 ways, for example, as 106419856 + 57805609 = 10316^2 + 7603^2 .

It is a cyclic number.

It is not a de Polignac number, because 164225465 - 2⁴ = 164225449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16422542 + ... + 16422551.

It is an arithmetic number, because the mean of its divisors is an integer number (49267641).

Almost surely, 2^164225465 is an apocalyptic number.

It is an amenable number.

164225465 is a deficient number, since it is larger than the sum of its proper divisors (32845099).

164225465 is an equidigital number, since it uses as much as digits as its factorization.

164225465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32845098.

The product of its digits is 57600, while the sum is 35.

The square root of 164225465 is about 12815.0483807124. The cubic root of 164225465 is about 547.6210917636.

The spelling of 164225465 in words is "one hundred sixty-four million, two hundred twenty-five thousand, four hundred sixty-five".