158868825 has 48 divisors (see below), whose sum is σ = 283481856. Its totient is φ = 78208000.

The previous prime is 158868821. The next prime is 158868833. The reversal of 158868825 is 528868851.

It is not a de Polignac number, because 158868825 - 2² = 158868821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (158868821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66400 + ... + 68750.

It is an arithmetic number, because the mean of its divisors is an integer number (5905872).

Almost surely, 2^158868825 is an apocalyptic number.

158868825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158868825 is a deficient number, since it is larger than the sum of its proper divisors (124613031).

158868825 is a wasteful number, since it uses less digits than its factorization.

158868825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434 (or 2429 counting only the distinct ones).

The product of its digits is 1228800, while the sum is 51.

The square root of 158868825 is about 12604.3177125936. The cubic root of 158868825 is about 541.6011292174.

The spelling of 158868825 in words is "one hundred fifty-eight million, eight hundred sixty-eight thousand, eight hundred twenty-five".