158231225 has 12 divisors (see below), whose sum is σ = 196612416. Its totient is φ = 126323280.

The previous prime is 158231219. The next prime is 158231261. The reversal of 158231225 is 522132851.

It is not a de Polignac number, because 158231225 - 2¹⁴ = 158214841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6284 + ... + 18866.

It is an arithmetic number, because the mean of its divisors is an integer number (16384368).

Almost surely, 2^158231225 is an apocalyptic number.

It is an amenable number.

158231225 is a deficient number, since it is larger than the sum of its proper divisors (38381191).

158231225 is a wasteful number, since it uses less digits than its factorization.

158231225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13096 (or 13091 counting only the distinct ones).

The product of its digits is 4800, while the sum is 29.

The square root of 158231225 is about 12578.9993640194. Note that the first 3 decimals coincide. The cubic root of 158231225 is about 540.8756084712.

The spelling of 158231225 in words is "one hundred fifty-eight million, two hundred thirty-one thousand, two hundred twenty-five".