1315505225 has 12 divisors (see below), whose sum is σ = 1631700624. Its totient is φ = 1052098320.

The previous prime is 1315505183. The next prime is 1315505249. The reversal of 1315505225 is 5225055131.

It is not a de Polignac number, because 1315505225 - 2¹² = 1315501129 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, 125642 + ... + 135708.

It is an arithmetic number, because the mean of its divisors is an integer number (135975052).

Almost surely, 2^1315505225 is an apocalyptic number.

It is an amenable number.

1315505225 is a deficient number, since it is larger than the sum of its proper divisors (316195399).

1315505225 is a wasteful number, since it uses less digits than its factorization.

1315505225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15304 (or 15299 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 1315505225 is about 36269.8941961512. The cubic root of 1315505225 is about 1095.7147949997.

The spelling of 1315505225 in words is "one billion, three hundred fifteen million, five hundred five thousand, two hundred twenty-five".