162021423225 has 48 divisors (see below), whose sum is σ = 274293372672. Its totient is φ = 84343882560.

The previous prime is 162021423209. The next prime is 162021423227. The reversal of 162021423225 is 522324120261.

It is not a de Polignac number, because 162021423225 - 2⁴ = 162021423209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 162021423192 and 162021423201.

It is not an unprimeable number, because it can be changed into a prime (162021423227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4895182 + ... + 4928168.

It is an arithmetic number, because the mean of its divisors is an integer number (5714445264).

Almost surely, 2^162021423225 is an apocalyptic number.

162021423225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162021423225 is a deficient number, since it is larger than the sum of its proper divisors (112271949447).

162021423225 is a wasteful number, since it uses less digits than its factorization.

162021423225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34566 (or 34561 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 162021423225 its reverse (522324120261), we get a palindrome (684345543486).

The spelling of 162021423225 in words is "one hundred sixty-two billion, twenty-one million, four hundred twenty-three thousand, two hundred twenty-five".