1518310225 has 12 divisors (see below), whose sum is σ = 1947626460. Its totient is φ = 1172763200.

The previous prime is 1518310217. The next prime is 1518310229. The reversal of 1518310225 is 5220138151.

It can be written as a sum of positive squares in 6 ways, for example, as 92794689 + 1425515536 = 9633^2 + 37756^2 .

It is not a de Polignac number, because 1518310225 - 2³ = 1518310217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1518310193 and 1518310202.

It is not an unprimeable number, because it can be changed into a prime (1518310229) 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, 1046386 + ... + 1047835.

It is an arithmetic number, because the mean of its divisors is an integer number (162302205).

Almost surely, 2^1518310225 is an apocalyptic number.

It is an amenable number.

1518310225 is a deficient number, since it is larger than the sum of its proper divisors (429316235).

1518310225 is a wasteful number, since it uses less digits than its factorization.

1518310225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094260 (or 2094255 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 1518310225 is about 38965.5004459073. The cubic root of 1518310225 is about 1149.3531901495.

Adding to 1518310225 its reverse (5220138151), we get a palindrome (6738448376).

The spelling of 1518310225 in words is "one billion, five hundred eighteen million, three hundred ten thousand, two hundred twenty-five".