163901825 has 12 divisors (see below), whose sum is σ = 203677440. Its totient is φ = 130838160.

The previous prime is 163901821. The next prime is 163901839. The reversal of 163901825 is 528109361.

It is not a de Polignac number, because 163901825 - 2² = 163901821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163901821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5132 + ... + 18818.

It is an arithmetic number, because the mean of its divisors is an integer number (16973120).

Almost surely, 2^163901825 is an apocalyptic number.

It is an amenable number.

163901825 is a deficient number, since it is larger than the sum of its proper divisors (39775615).

163901825 is a wasteful number, since it uses less digits than its factorization.

163901825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14176 (or 14171 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 163901825 is about 12802.4148112768. The cubic root of 163901825 is about 547.2611219261.

The spelling of 163901825 in words is "one hundred sixty-three million, nine hundred one thousand, eight hundred twenty-five".