164425651 has 4 divisors (see below), whose sum is σ = 177073792. Its totient is φ = 151777512.

The previous prime is 164425627. The next prime is 164425661. The reversal of 164425651 is 156524461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164425651 is a prime.

It is a super-3 number, since 3×164425651³ (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 (164425661) 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, 6324051 + ... + 6324076.

It is an arithmetic number, because the mean of its divisors is an integer number (44268448).

Almost surely, 2^164425651 is an apocalyptic number.

164425651 is a deficient number, since it is larger than the sum of its proper divisors (12648141).

164425651 is a wasteful number, since it uses less digits than its factorization.

164425651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12648140.

The product of its digits is 28800, while the sum is 34.

The square root of 164425651 is about 12822.8565850204. The cubic root of 164425651 is about 547.8435127350.

The spelling of 164425651 in words is "one hundred sixty-four million, four hundred twenty-five thousand, six hundred fifty-one".