164539225 has 12 divisors (see below), whose sum is σ = 206613760. Its totient is φ = 129963600.

The previous prime is 164539223. The next prime is 164539237. The reversal of 164539225 is 522935461.

It is not a de Polignac number, because 164539225 - 2¹ = 164539223 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (164539223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39681 + ... + 43630.

Almost surely, 2^164539225 is an apocalyptic number.

It is an amenable number.

164539225 is a deficient number, since it is larger than the sum of its proper divisors (42074535).

164539225 is an equidigital number, since it uses as much as digits as its factorization.

164539225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83400 (or 83395 counting only the distinct ones).

The product of its digits is 64800, while the sum is 37.

The square root of 164539225 is about 12827.2843969408. The cubic root of 164539225 is about 547.9696213202.

The spelling of 164539225 in words is "one hundred sixty-four million, five hundred thirty-nine thousand, two hundred twenty-five".