125532131 has 4 divisors (see below), whose sum is σ = 132916392. Its totient is φ = 118147872.

The previous prime is 125532109. The next prime is 125532133. The reversal of 125532131 is 131235521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125532131 is a prime.

It is a super-2 number, since 2×125532131² = 31516631826802322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125532097 and 125532106.

It is not an unprimeable number, because it can be changed into a prime (125532133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3692105 + ... + 3692138.

It is an arithmetic number, because the mean of its divisors is an integer number (33229098).

Almost surely, 2^125532131 is an apocalyptic number.

125532131 is a deficient number, since it is larger than the sum of its proper divisors (7384261).

125532131 is an equidigital number, since it uses as much as digits as its factorization.

125532131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7384260.

The product of its digits is 900, while the sum is 23.

The square root of 125532131 is about 11204.1122361390. The cubic root of 125532131 is about 500.7085035712.

Adding to 125532131 its reverse (131235521), we get a palindrome (256767652).

The spelling of 125532131 in words is "one hundred twenty-five million, five hundred thirty-two thousand, one hundred thirty-one".