164425907 has 4 divisors (see below), whose sum is σ = 164452416. Its totient is φ = 164399400.

The previous prime is 164425883. The next prime is 164425913. The reversal of 164425907 is 709524461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164425907 - 2²⁶ = 97317043 is a prime.

It is a super-3 number, since 3×164425907³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164425957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1598 + ... + 18204.

It is an arithmetic number, because the mean of its divisors is an integer number (41113104).

Almost surely, 2^164425907 is an apocalyptic number.

164425907 is a deficient number, since it is larger than the sum of its proper divisors (26509).

164425907 is an equidigital number, since it uses as much as digits as its factorization.

164425907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26508.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 164425907 is about 12822.8665671916. The cubic root of 164425907 is about 547.8437970537.

The spelling of 164425907 in words is "one hundred sixty-four million, four hundred twenty-five thousand, nine hundred seven".