125525311 has 4 divisors (see below), whose sum is σ = 129853800. Its totient is φ = 121196824.

The previous prime is 125525261. The next prime is 125525327. The reversal of 125525311 is 113525521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113525521 = 71 ⋅1598951.

It is a cyclic number.

It is not a de Polignac number, because 125525311 - 2¹⁷ = 125394239 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 (125525341) 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, 2164201 + ... + 2164258.

It is an arithmetic number, because the mean of its divisors is an integer number (32463450).

Almost surely, 2^125525311 is an apocalyptic number.

125525311 is a deficient number, since it is larger than the sum of its proper divisors (4328489).

125525311 is an equidigital number, since it uses as much as digits as its factorization.

125525311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328488.

The product of its digits is 1500, while the sum is 25.

The square root of 125525311 is about 11203.8078794667. The cubic root of 125525311 is about 500.6994357896.

The spelling of 125525311 in words is "one hundred twenty-five million, five hundred twenty-five thousand, three hundred eleven".