158203125 has 50 divisors (see below), whose sum is σ = 295410126. Its totient is φ = 84375000.

The previous prime is 158203103. The next prime is 158203127. The reversal of 158203125 is 521302851.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 41757444 + 116445681 = 6462^2 + 10791^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=375.

It is not a de Polignac number, because 158203125 - 2⁷ = 158202997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 5 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158203127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 31640623 + ... + 31640627.

Almost surely, 2^158203125 is an apocalyptic number.

158203125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158203125 is a deficient number, since it is larger than the sum of its proper divisors (137207001).

158203125 is an frugal number, since it uses more digits than its factorization.

158203125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57 (or 8 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 158203125 is about 12577.8823734363. The cubic root of 158203125 is about 540.8435888653.

Adding to 158203125 its reverse (521302851), we get a palindrome (679505976).

The spelling of 158203125 in words is "one hundred fifty-eight million, two hundred three thousand, one hundred twenty-five".