163436400522025 has 24 divisors (see below), whose sum is σ = 202893726970368. Its totient is φ = 130599145320000.

The previous prime is 163436400522007. The next prime is 163436400522047. The reversal of 163436400522025 is 520225004634361.

It is not a de Polignac number, because 163436400522025 - 2¹³ = 163436400513833 is a prime.

It is a super-2 number, since 2×163436400522025² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77697390 + ... + 79773160.

It is an arithmetic number, because the mean of its divisors is an integer number (8453905290432).

Almost surely, 2^{163436400522025} is an apocalyptic number.

It is an amenable number.

163436400522025 is a deficient number, since it is larger than the sum of its proper divisors (39457326448343).

163436400522025 is a wasteful number, since it uses less digits than its factorization.

163436400522025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079393 (or 2079388 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 163436400522025 in words is "one hundred sixty-three trillion, four hundred thirty-six billion, four hundred million, five hundred twenty-two thousand, twenty-five".