156500225 has 12 divisors (see below), whose sum is σ = 221783424. Its totient is φ = 107314320.

The previous prime is 156500221. The next prime is 156500261. The reversal of 156500225 is 522005651.

It is not a de Polignac number, because 156500225 - 2² = 156500221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156500194 and 156500203.

It is not an unprimeable number, because it can be changed into a prime (156500221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 446969 + ... + 447318.

It is an arithmetic number, because the mean of its divisors is an integer number (18481952).

Almost surely, 2^156500225 is an apocalyptic number.

It is an amenable number.

156500225 is a deficient number, since it is larger than the sum of its proper divisors (65283199).

156500225 is an equidigital number, since it uses as much as digits as its factorization.

156500225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894304 (or 894299 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 156500225 is about 12510.0049960022. The cubic root of 156500225 is about 538.8960356551.

Adding to 156500225 its reverse (522005651), we get a palindrome (678505876).

The spelling of 156500225 in words is "one hundred fifty-six million, five hundred thousand, two hundred twenty-five".