165463143225 has 24 divisors (see below), whose sum is σ = 279927729312. Its totient is φ = 86194752000.

The previous prime is 165463143203. The next prime is 165463143259. The reversal of 165463143225 is 522341364561.

It is not a de Polignac number, because 165463143225 - 2¹¹ = 165463141177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25649976 + ... + 25656425.

It is an arithmetic number, because the mean of its divisors is an integer number (11663655388).

Almost surely, 2^165463143225 is an apocalyptic number.

165463143225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165463143225 is a deficient number, since it is larger than the sum of its proper divisors (114464586087).

165463143225 is a wasteful number, since it uses less digits than its factorization.

165463143225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51306457 (or 51306452 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The spelling of 165463143225 in words is "one hundred sixty-five billion, four hundred sixty-three million, one hundred forty-three thousand, two hundred twenty-five".