131525866 has 16 divisors (see below), whose sum is σ = 208728000. Its totient is φ = 61985088.

The previous prime is 131525857. The next prime is 131525869. The reversal of 131525866 is 668525131.

It is not an unprimeable number, because it can be changed into a prime (131525869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135 + ... + 16258.

It is an arithmetic number, because the mean of its divisors is an integer number (13045500).

Almost surely, 2^131525866 is an apocalyptic number.

131525866 is a deficient number, since it is larger than the sum of its proper divisors (77202134).

131525866 is a wasteful number, since it uses less digits than its factorization.

131525866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17613.

The product of its digits is 43200, while the sum is 37.

The square root of 131525866 is about 11468.4726969200. The cubic root of 131525866 is about 508.5539790200.

The spelling of 131525866 in words is "one hundred thirty-one million, five hundred twenty-five thousand, eight hundred sixty-six".