125122261 has 12 divisors (see below), whose sum is σ = 145002240. Its totient is φ = 107053760.

The previous prime is 125122243. The next prime is 125122267. The reversal of 125122261 is 162221521.

It is not a de Polignac number, because 125122261 - 2⁹ = 125121749 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 (125122267) 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 11 ways as a sum of consecutive naturals, for example, 16501 + ... + 22858.

It is an arithmetic number, because the mean of its divisors is an integer number (12083520).

Almost surely, 2^125122261 is an apocalyptic number.

125122261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125122261 is a deficient number, since it is larger than the sum of its proper divisors (19879979).

125122261 is a wasteful number, since it uses less digits than its factorization.

125122261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39404 (or 39387 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 125122261 is about 11185.8062293247. The cubic root of 125122261 is about 500.1629615480.

Adding to 125122261 its reverse (162221521), we get a palindrome (287343782).

The spelling of 125122261 in words is "one hundred twenty-five million, one hundred twenty-two thousand, two hundred sixty-one".