131125569 has 16 divisors (see below), whose sum is σ = 179314560. Its totient is φ = 85205120.

The previous prime is 131125541. The next prime is 131125571. The reversal of 131125569 is 965521131.

131125569 = T₂₉₄ + T₂₉₅ + ... + T₉₃₂.

It is a cyclic number.

It is not a de Polignac number, because 131125569 - 2⁵ = 131125537 is a prime.

It is a super-2 number, since 2×131125569² = 34387829691147522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131125529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15499 + ... + 22415.

It is an arithmetic number, because the mean of its divisors is an integer number (11207160).

Almost surely, 2^131125569 is an apocalyptic number.

It is an amenable number.

131125569 is a deficient number, since it is larger than the sum of its proper divisors (48188991).

131125569 is an equidigital number, since it uses as much as digits as its factorization.

131125569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080.

The product of its digits is 8100, while the sum is 33.

The square root of 131125569 is about 11451.0073356015. The cubic root of 131125569 is about 508.0375292608.

It can be divided in two parts, 13112 and 5569, that added together give a palindrome (18681).

The spelling of 131125569 in words is "one hundred thirty-one million, one hundred twenty-five thousand, five hundred sixty-nine".