125411521 has 8 divisors (see below), whose sum is σ = 130505760. Its totient is φ = 120416352.

The previous prime is 125411519. The next prime is 125411563. The reversal of 125411521 is 125114521.

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 125411521 - 2¹ = 125411519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125411492 and 125411501.

It is not an unprimeable number, because it can be changed into a prime (125411501) 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, 22180 + ... + 27253.

It is an arithmetic number, because the mean of its divisors is an integer number (16313220).

Almost surely, 2^125411521 is an apocalyptic number.

It is an amenable number.

125411521 is a deficient number, since it is larger than the sum of its proper divisors (5094239).

125411521 is an equidigital number, since it uses as much as digits as its factorization.

125411521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49535.

The product of its digits is 400, while the sum is 22.

The square root of 125411521 is about 11198.7285439018. The cubic root of 125411521 is about 500.5480936339.

The spelling of 125411521 in words is "one hundred twenty-five million, four hundred eleven thousand, five hundred twenty-one".