727121225 has 12 divisors (see below), whose sum is σ = 925999884. Its totient is φ = 565974720.

The previous prime is 727121209. The next prime is 727121231. The reversal of 727121225 is 522121727.

It can be written as a sum of positive squares in 6 ways, for example, as 67453369 + 659667856 = 8213^2 + 25684^2 .

It is not a de Polignac number, because 727121225 - 2⁴ = 727121209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 392114 + ... + 393963.

It is an arithmetic number, because the mean of its divisors is an integer number (77166657).

Almost surely, 2^727121225 is an apocalyptic number.

It is an amenable number.

727121225 is a deficient number, since it is larger than the sum of its proper divisors (198878659).

727121225 is a wasteful number, since it uses less digits than its factorization.

727121225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786124 (or 786119 counting only the distinct ones).

The product of its digits is 3920, while the sum is 29.

The square root of 727121225 is about 26965.1854249141. The cubic root of 727121225 is about 899.2261764179.

It can be divided in two parts, 72712 and 1225, that added together give a palindrome (73937).

The spelling of 727121225 in words is "seven hundred twenty-seven million, one hundred twenty-one thousand, two hundred twenty-five".