125405211 has 8 divisors (see below), whose sum is σ = 167656720. Its totient is φ = 83378592.

The previous prime is 125405207. The next prime is 125405219. The reversal of 125405211 is 112504521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125405211 - 2² = 125405207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125405219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54916 + ... + 57153.

It is an arithmetic number, because the mean of its divisors is an integer number (20957090).

Almost surely, 2^125405211 is an apocalyptic number.

125405211 is a deficient number, since it is larger than the sum of its proper divisors (42251509).

125405211 is a wasteful number, since it uses less digits than its factorization.

125405211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112445.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 125405211 is about 11198.4468119467. The cubic root of 125405211 is about 500.5396985746.

Adding to 125405211 its reverse (112504521), we get a palindrome (237909732).

The spelling of 125405211 in words is "one hundred twenty-five million, four hundred five thousand, two hundred eleven".