156165425 has 12 divisors (see below), whose sum is σ = 208541340. Its totient is φ = 115321920.

The previous prime is 156165421. The next prime is 156165431. The reversal of 156165425 is 524561651.

156165425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 19088161 + 137077264 = 4369^2 + 11708^2 .

It is not a de Polignac number, because 156165425 - 2² = 156165421 is a prime.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (156165421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239930 + ... + 240579.

It is an arithmetic number, because the mean of its divisors is an integer number (17378445).

Almost surely, 2^156165425 is an apocalyptic number.

It is an amenable number.

156165425 is a deficient number, since it is larger than the sum of its proper divisors (52375915).

156165425 is a wasteful number, since it uses less digits than its factorization.

156165425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480532 (or 480527 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 156165425 is about 12496.6165420885. The cubic root of 156165425 is about 538.5114756015.

The spelling of 156165425 in words is "one hundred fifty-six million, one hundred sixty-five thousand, four hundred twenty-five".