156025081 has 3 divisors (see below), whose sum is σ = 156037573. Its totient is φ = 156012590.

The previous prime is 156025073. The next prime is 156025091. The reversal of 156025081 is 180520651.

The square root of 156025081 is 12491.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 180520651 = 151 ⋅1195501.

It is not a de Polignac number, because 156025081 - 2³ = 156025073 is a prime.

It is a super-2 number, since 2×156025081² = 48687651802113122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156025091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6246 + ... + 18736.

Almost surely, 2^156025081 is an apocalyptic number.

156025081 is the 12491-st square number.

156025081 is the 6246-th centered octagonal number.

It is an amenable number.

156025081 is a deficient number, since it is larger than the sum of its proper divisors (12492).

156025081 is an frugal number, since it uses more digits than its factorization.

156025081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24982 (or 12491 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The cubic root of 156025081 is about 538.3501093114.

The spelling of 156025081 in words is "one hundred fifty-six million, twenty-five thousand, eighty-one".