125563111 has 4 divisors (see below), whose sum is σ = 125759032. Its totient is φ = 125367192.

The previous prime is 125563093. The next prime is 125563117. The reversal of 125563111 is 111365521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111365521 = 17 ⋅6550913.

It is a cyclic number.

It is not a de Polignac number, because 125563111 - 2²¹ = 123465959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125563117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96996 + ... + 98281.

It is an arithmetic number, because the mean of its divisors is an integer number (31439758).

Almost surely, 2^125563111 is an apocalyptic number.

125563111 is a deficient number, since it is larger than the sum of its proper divisors (195921).

125563111 is an equidigital number, since it uses as much as digits as its factorization.

125563111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195920.

The product of its digits is 900, while the sum is 25.

The square root of 125563111 is about 11205.4946789510. The cubic root of 125563111 is about 500.7496900346.

The spelling of 125563111 in words is "one hundred twenty-five million, five hundred sixty-three thousand, one hundred eleven".