156642125 has 8 divisors (see below), whose sum is σ = 195489528. Its totient is φ = 125313600.

The previous prime is 156642107. The next prime is 156642151. The reversal of 156642125 is 521246651.

156642125 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 4 ways, for example, as 13169641 + 143472484 = 3629^2 + 11978^2 .

It is not a de Polignac number, because 156642125 - 2¹⁴ = 156625741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156642091 and 156642100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626444 + ... + 626693.

It is an arithmetic number, because the mean of its divisors is an integer number (24436191).

Almost surely, 2^156642125 is an apocalyptic number.

It is an amenable number.

156642125 is a deficient number, since it is larger than the sum of its proper divisors (38847403).

156642125 is an equidigital number, since it uses as much as digits as its factorization.

156642125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253152 (or 1253142 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 156642125 is about 12515.6751715599. The cubic root of 156642125 is about 539.0588602289.

Adding to 156642125 its reverse (521246651), we get a palindrome (677888776).

The spelling of 156642125 in words is "one hundred fifty-six million, six hundred forty-two thousand, one hundred twenty-five".