168478025 has 24 divisors (see below), whose sum is σ = 217248000. Its totient is φ = 129470400.

The previous prime is 168478003. The next prime is 168478067. The reversal of 168478025 is 520874861.

It is not a de Polignac number, because 168478025 - 2⁶ = 168477961 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114746 + ... + 116204.

It is an arithmetic number, because the mean of its divisors is an integer number (9052000).

Almost surely, 2^168478025 is an apocalyptic number.

It is an amenable number.

168478025 is a deficient number, since it is larger than the sum of its proper divisors (48769975).

168478025 is a wasteful number, since it uses less digits than its factorization.

168478025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1649 (or 1644 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 168478025 is about 12979.9085127747. The cubic root of 168478025 is about 552.3076867992.

The spelling of 168478025 in words is "one hundred sixty-eight million, four hundred seventy-eight thousand, twenty-five".