1313478525 has 24 divisors (see below), whose sum is σ = 2241673984. Its totient is φ = 677923200.

The previous prime is 1313478499. The next prime is 1313478533. The reversal of 1313478525 is 5258743131.

It is a happy number.

It is not a de Polignac number, because 1313478525 - 2²⁴ = 1296701309 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 280144 + ... + 284793.

Almost surely, 2^1313478525 is an apocalyptic number.

1313478525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1313478525 is a deficient number, since it is larger than the sum of its proper divisors (928195459).

1313478525 is a wasteful number, since it uses less digits than its factorization.

1313478525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564981 (or 564976 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 1313478525 is about 36241.9442773149. The cubic root of 1313478525 is about 1095.1518106486.

The spelling of 1313478525 in words is "one billion, three hundred thirteen million, four hundred seventy-eight thousand, five hundred twenty-five".