755025121 has 16 divisors (see below), whose sum is σ = 808943760. Its totient is φ = 703422720.

The previous prime is 755025113. The next prime is 755025133. The reversal of 755025121 is 121520557.

It can be written as a sum of positive squares in 8 ways, for example, as 698896 + 754326225 = 836^2 + 27465^2 .

It is not a de Polignac number, because 755025121 - 2³ = 755025113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 755025121.

It is not an unprimeable number, because it can be changed into a prime (755025151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89731 + ... + 97783.

It is an arithmetic number, because the mean of its divisors is an integer number (50558985).

Almost surely, 2^755025121 is an apocalyptic number.

It is an amenable number.

755025121 is a deficient number, since it is larger than the sum of its proper divisors (53918639).

755025121 is a wasteful number, since it uses less digits than its factorization.

755025121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8196.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 755025121 is about 27477.7204476645. The cubic root of 755025121 is about 910.5849481509.

Adding to 755025121 its reverse (121520557), we get a palindrome (876545678).

The spelling of 755025121 in words is "seven hundred fifty-five million, twenty-five thousand, one hundred twenty-one".