156825225 has 72 divisors (see below), whose sum is σ = 290701632. Its totient is φ = 80784000.

The previous prime is 156825217. The next prime is 156825233. The reversal of 156825225 is 522528651.

It is a happy number.

156825225 is a `hidden beast` number, since 1 + 56 + 82 + 522 + 5 = 666.

156825225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (156825217) and next prime (156825233).

It is not a de Polignac number, because 156825225 - 2³ = 156825217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 156825225.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1522524 + ... + 1522626.

Almost surely, 2^156825225 is an apocalyptic number.

156825225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

156825225 is a deficient number, since it is larger than the sum of its proper divisors (133876407).

156825225 is a wasteful number, since it uses less digits than its factorization.

156825225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 279 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 156825225 is about 12522.9878623274. The cubic root of 156825225 is about 539.2688149150.

The spelling of 156825225 in words is "one hundred fifty-six million, eight hundred twenty-five thousand, two hundred twenty-five".