163625253 has 16 divisors (see below), whose sum is σ = 238450176. Its totient is φ = 98979440.

The previous prime is 163625249. The next prime is 163625269. The reversal of 163625253 is 352526361.

It is a cyclic number.

It is not a de Polignac number, because 163625253 - 2² = 163625249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163625053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14176 + ... + 22982.

It is an arithmetic number, because the mean of its divisors is an integer number (14903136).

Almost surely, 2^163625253 is an apocalyptic number.

It is an amenable number.

163625253 is a deficient number, since it is larger than the sum of its proper divisors (74824923).

163625253 is a wasteful number, since it uses less digits than its factorization.

163625253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9384.

The product of its digits is 32400, while the sum is 33.

The square root of 163625253 is about 12791.6086947655. The cubic root of 163625253 is about 546.9531279639.

It can be divided in two parts, 163625 and 253, that added together give a triangular number (163878 = T₅₇₂).

The spelling of 163625253 in words is "one hundred sixty-three million, six hundred twenty-five thousand, two hundred fifty-three".