125544217 has 4 divisors (see below), whose sum is σ = 125802496. Its totient is φ = 125285940.

The previous prime is 125544187. The next prime is 125544233. The reversal of 125544217 is 712445521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125544217 - 2¹¹ = 125542169 is a prime.

It is a super-2 number, since 2×125544217² = 31522700844286178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125544247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128409 + ... + 129382.

It is an arithmetic number, because the mean of its divisors is an integer number (31450624).

Almost surely, 2^125544217 is an apocalyptic number.

It is an amenable number.

125544217 is a deficient number, since it is larger than the sum of its proper divisors (258279).

125544217 is an equidigital number, since it uses as much as digits as its factorization.

125544217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258278.

The product of its digits is 11200, while the sum is 31.

The square root of 125544217 is about 11204.6515786971. The cubic root of 125544217 is about 500.7245721499.

Adding to 125544217 its reverse (712445521), we get a palindrome (837989738).

The spelling of 125544217 in words is "one hundred twenty-five million, five hundred forty-four thousand, two hundred seventeen".