158425 has 6 divisors (see below), whose sum is σ = 196478. Its totient is φ = 126720.

The previous prime is 158419. The next prime is 158429. The reversal of 158425 is 524851.

It can be written as a sum of positive squares in 3 ways, for example, as 4761 + 153664 = 69^2 + 392^2 .

It is not a de Polignac number, because 158425 - 2⁵ = 158393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 6337 = 158425 / (1 + 5 + 8 + 4 + 2 + 5).

It is a Duffinian number.

158425 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 158425.

It is not an unprimeable number, because it can be changed into a prime (158429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3144 + ... + 3193.

2¹⁵⁸⁴²⁵ is an apocalyptic number.

It is an amenable number.

158425 is a deficient number, since it is larger than the sum of its proper divisors (38053).

158425 is an equidigital number, since it uses as much as digits as its factorization.

158425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6347 (or 6342 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 158425 is about 398.0263810352. The cubic root of 158425 is about 54.1096309571.

The spelling of 158425 in words is "one hundred fifty-eight thousand, four hundred twenty-five".