125307481 has 8 divisors (see below), whose sum is σ = 137159624. Its totient is φ = 113771520.

The previous prime is 125307443. The next prime is 125307517. The reversal of 125307481 is 184703521.

It can be written as a sum of positive squares in 4 ways, for example, as 225625 + 125081856 = 475^2 + 11184^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125307481 - 2⁹ = 125306969 is a prime.

It is a super-2 number, since 2×125307481² = 31403929589130722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125307181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78216 + ... + 79801.

It is an arithmetic number, because the mean of its divisors is an integer number (17144953).

Almost surely, 2^125307481 is an apocalyptic number.

It is an amenable number.

125307481 is a deficient number, since it is larger than the sum of its proper divisors (11852143).

125307481 is a wasteful number, since it uses less digits than its factorization.

125307481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158091.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 125307481 is about 11194.0824099164. The cubic root of 125307481 is about 500.4096389668.

The spelling of 125307481 in words is "one hundred twenty-five million, three hundred seven thousand, four hundred eighty-one".