125308481 has 4 divisors (see below), whose sum is σ = 125474772. Its totient is φ = 125142192.

The previous prime is 125308459. The next prime is 125308489. The reversal of 125308481 is 184803521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184803521 = 7 ⋅26400503.

It can be written as a sum of positive squares in 2 ways, for example, as 27615025 + 97693456 = 5255^2 + 9884^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125308481 is a prime.

It is a super-2 number, since 2×125308481² = 31404430821054722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125308489) 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, 82010 + ... + 83523.

It is an arithmetic number, because the mean of its divisors is an integer number (31368693).

Almost surely, 2^125308481 is an apocalyptic number.

It is an amenable number.

125308481 is a deficient number, since it is larger than the sum of its proper divisors (166291).

125308481 is an equidigital number, since it uses as much as digits as its factorization.

125308481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166290.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 125308481 is about 11194.1270762842. The cubic root of 125308481 is about 500.4109701146.

The spelling of 125308481 in words is "one hundred twenty-five million, three hundred eight thousand, four hundred eighty-one".