125537481 has 12 divisors (see below), whose sum is σ = 181641460. Its totient is φ = 83548800.

The previous prime is 125537459. The next prime is 125537513. The reversal of 125537481 is 184735521.

125537481 is a `hidden beast` number, since 125 + 53 + 7 + 481 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99680256 + 25857225 = 9984^2 + 5085^2 .

It is not a de Polignac number, because 125537481 - 2⁷ = 125537353 is a prime.

It is a super-2 number, since 2×125537481² = 31519318271650722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125537441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6196 + ... + 17013.

Almost surely, 2^125537481 is an apocalyptic number.

It is an amenable number.

125537481 is a deficient number, since it is larger than the sum of its proper divisors (56103979).

125537481 is a wasteful number, since it uses less digits than its factorization.

125537481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23816 (or 23813 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 125537481 is about 11204.3509852200. The cubic root of 125537481 is about 500.7156166304.

The spelling of 125537481 in words is "one hundred twenty-five million, five hundred thirty-seven thousand, four hundred eighty-one".