18077356225 has 12 divisors (see below), whose sum is σ = 22637864700. Its totient is φ = 14318696000.

The previous prime is 18077356223. The next prime is 18077356237. The reversal of 18077356225 is 52265377081.

It can be written as a sum of positive squares in 6 ways, for example, as 705061809 + 17372294416 = 26553^2 + 131804^2 .

It is not a de Polignac number, because 18077356225 - 2¹ = 18077356223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18077356223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3577150 + ... + 3582199.

It is an arithmetic number, because the mean of its divisors is an integer number (1886488725).

Almost surely, 2^18077356225 is an apocalyptic number.

It is an amenable number.

18077356225 is a deficient number, since it is larger than the sum of its proper divisors (4560508475).

18077356225 is a wasteful number, since it uses less digits than its factorization.

18077356225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7159460 (or 7159455 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 18077356225 in words is "eighteen billion, seventy-seven million, three hundred fifty-six thousand, two hundred twenty-five".