718261225 has 12 divisors (see below), whose sum is σ = 971611920. Its totient is φ = 522371600.

The previous prime is 718261223. The next prime is 718261231. The reversal of 718261225 is 522162817.

It is a happy number.

It is not a de Polignac number, because 718261225 - 2¹ = 718261223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (718261223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305655 + ... + 1306204.

It is an arithmetic number, because the mean of its divisors is an integer number (80967660).

Almost surely, 2^718261225 is an apocalyptic number.

It is an amenable number.

718261225 is a deficient number, since it is larger than the sum of its proper divisors (253350695).

718261225 is a wasteful number, since it uses less digits than its factorization.

718261225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2611880 (or 2611875 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 718261225 is about 26800.3959858805. The cubic root of 718261225 is about 895.5588719446.

The spelling of 718261225 in words is "seven hundred eighteen million, two hundred sixty-one thousand, two hundred twenty-five".