156425 has 6 divisors (see below), whose sum is σ = 193998. Its totient is φ = 125120.

The previous prime is 156421. The next prime is 156437. The reversal of 156425 is 524651.

It can be written as a sum of positive squares in 3 ways, for example, as 48841 + 107584 = 221^2 + 328^2 .

It is not a de Polignac number, because 156425 - 2² = 156421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 156425.

It is not an unprimeable number, because it can be changed into a prime (156421) 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 5 ways as a sum of consecutive naturals, for example, 3104 + ... + 3153.

It is an arithmetic number, because the mean of its divisors is an integer number (32333).

2¹⁵⁶⁴²⁵ is an apocalyptic number.

It is an amenable number.

156425 is a deficient number, since it is larger than the sum of its proper divisors (37573).

156425 is an equidigital number, since it uses as much as digits as its factorization.

156425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6267 (or 6262 counting only the distinct ones).

The product of its digits is 1200, while the sum is 23.

The square root of 156425 is about 395.5060050113. The cubic root of 156425 is about 53.8809678056.

It can be divided in two parts, 15642 and 5, that multiplied together give a triangular number (78210 = T₃₉₅).

The spelling of 156425 in words is "one hundred fifty-six thousand, four hundred twenty-five".