1516355225 has 72 divisors (see below), whose sum is σ = 2442531168. Its totient is φ = 922924800.

The previous prime is 1516355221. The next prime is 1516355227. The reversal of 1516355225 is 5225536151.

It is not a de Polignac number, because 1516355225 - 2² = 1516355221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516355221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 578117 + ... + 580733.

It is an arithmetic number, because the mean of its divisors is an integer number (33924044).

Almost surely, 2^1516355225 is an apocalyptic number.

It is an amenable number.

1516355225 is a deficient number, since it is larger than the sum of its proper divisors (926175943).

1516355225 is a wasteful number, since it uses less digits than its factorization.

1516355225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695 (or 2683 counting only the distinct ones).

The product of its digits is 45000, while the sum is 35.

The square root of 1516355225 is about 38940.4060713290. The cubic root of 1516355225 is about 1148.8596698843.

The spelling of 1516355225 in words is "one billion, five hundred sixteen million, three hundred fifty-five thousand, two hundred twenty-five".