163543223642025 has 24 divisors (see below), whose sum is σ = 270668220080544. Its totient is φ = 87133776160000.

The previous prime is 163543223642023. The next prime is 163543223642063. The reversal of 163543223642025 is 520246322345361.

It is not a de Polignac number, because 163543223642025 - 2¹ = 163543223642023 is a prime.

It is a super-2 number, since 2×163543223642025² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163543223642023) 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, 1115881851 + ... + 1116028400.

It is an arithmetic number, because the mean of its divisors is an integer number (11277842503356).

Almost surely, 2^{163543223642025} is an apocalyptic number.

163543223642025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163543223642025 is a deficient number, since it is larger than the sum of its proper divisors (107124996438519).

163543223642025 is a wasteful number, since it uses less digits than its factorization.

163543223642025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231911241 (or 2231911236 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 48.

Adding to 163543223642025 its reverse (520246322345361), we get a palindrome (683789545987386).

The spelling of 163543223642025 in words is "one hundred sixty-three trillion, five hundred forty-three billion, two hundred twenty-three million, six hundred forty-two thousand, twenty-five".