163612025 has 6 divisors (see below), whose sum is σ = 202878942. Its totient is φ = 130889600.

The previous prime is 163611977. The next prime is 163612051. The reversal of 163612025 is 520216361.

It can be written as a sum of positive squares in 3 ways, for example, as 258064 + 163353961 = 508^2 + 12781^2 .

It is not a de Polignac number, because 163612025 - 2¹² = 163607929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163611985 and 163612003.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3272216 + ... + 3272265.

It is an arithmetic number, because the mean of its divisors is an integer number (33813157).

Almost surely, 2^163612025 is an apocalyptic number.

It is an amenable number.

163612025 is a deficient number, since it is larger than the sum of its proper divisors (39266917).

163612025 is an equidigital number, since it uses as much as digits as its factorization.

163612025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544491 (or 6544486 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 163612025 is about 12791.0916265970. The cubic root of 163612025 is about 546.9383884075.

Adding to 163612025 its reverse (520216361), we get a palindrome (683828386).

The spelling of 163612025 in words is "one hundred sixty-three million, six hundred twelve thousand, twenty-five".