163534025 has 12 divisors (see below), whose sum is σ = 211599552. Its totient is φ = 125138640.

The previous prime is 163533989. The next prime is 163534051. The reversal of 163534025 is 520435361.

It is not a de Polignac number, because 163534025 - 2⁶ = 163533961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 141629 + ... + 142778.

It is an arithmetic number, because the mean of its divisors is an integer number (17633296).

Almost surely, 2^163534025 is an apocalyptic number.

It is an amenable number.

163534025 is a deficient number, since it is larger than the sum of its proper divisors (48065527).

163534025 is a wasteful number, since it uses less digits than its factorization.

163534025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284440 (or 284435 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 163534025 is about 12788.0422661172. The cubic root of 163534025 is about 546.8514592316.

Adding to 163534025 its reverse (520435361), we get a palindrome (683969386).

The spelling of 163534025 in words is "one hundred sixty-three million, five hundred thirty-four thousand, twenty-five".