164240222415425 has 24 divisors (see below), whose sum is σ = 220669411503744. Its totient is φ = 120541006992960.

The previous prime is 164240222415421. The next prime is 164240222415443. The reversal of 164240222415425 is 524514222042461.

It is not a de Polignac number, because 164240222415425 - 2² = 164240222415421 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164240222415421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1550114297 + ... + 1550220246.

It is an arithmetic number, because the mean of its divisors is an integer number (9194558812656).

Almost surely, 2^{164240222415425} is an apocalyptic number.

It is an amenable number.

164240222415425 is a deficient number, since it is larger than the sum of its proper divisors (56429189088319).

164240222415425 is a wasteful number, since it uses less digits than its factorization.

164240222415425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3100334729 (or 3100334724 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 44.

Adding to 164240222415425 its reverse (524514222042461), we get a palindrome (688754444457886).

The spelling of 164240222415425 in words is "one hundred sixty-four trillion, two hundred forty billion, two hundred twenty-two million, four hundred fifteen thousand, four hundred twenty-five".