125531061 has 16 divisors (see below), whose sum is σ = 172322304. Its totient is φ = 81237744.

The previous prime is 125531057. The next prime is 125531069. The reversal of 125531061 is 160135521.

It is not a de Polignac number, because 125531061 - 2² = 125531057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125531069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18630 + ... + 24456.

It is an arithmetic number, because the mean of its divisors is an integer number (10770144).

Almost surely, 2^125531061 is an apocalyptic number.

It is an amenable number.

125531061 is a deficient number, since it is larger than the sum of its proper divisors (46791243).

125531061 is a wasteful number, since it uses less digits than its factorization.

125531061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6040.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 125531061 is about 11204.0644857123. The cubic root of 125531061 is about 500.7070809351.

Adding to 125531061 its reverse (160135521), we get a palindrome (285666582).

The spelling of 125531061 in words is "one hundred twenty-five million, five hundred thirty-one thousand, sixty-one".