125836221 has 32 divisors (see below), whose sum is σ = 203120640. Its totient is φ = 67690944.

The previous prime is 125836219. The next prime is 125836231. The reversal of 125836221 is 122638521.

It is not a de Polignac number, because 125836221 - 2¹ = 125836219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125836201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68116 + ... + 69938.

It is an arithmetic number, because the mean of its divisors is an integer number (6347520).

Almost surely, 2^125836221 is an apocalyptic number.

It is an amenable number.

125836221 is a deficient number, since it is larger than the sum of its proper divisors (77284419).

125836221 is a wasteful number, since it uses less digits than its factorization.

125836221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025.

The product of its digits is 5760, while the sum is 30.

The square root of 125836221 is about 11217.6744916226. The cubic root of 125836221 is about 501.1124842551.

The spelling of 125836221 in words is "one hundred twenty-five million, eight hundred thirty-six thousand, two hundred twenty-one".