1313510525 has 12 divisors (see below), whose sum is σ = 1724562612. Its totient is φ = 988995840.

The previous prime is 1313510509. The next prime is 1313510537. The reversal of 1313510525 is 5250153131.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 194072761 + 1119437764 = 13931^2 + 33458^2 .

It is not a de Polignac number, because 1313510525 - 2⁴ = 1313510509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313510494 and 1313510503.

It is a congruent 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, 1544882 + ... + 1545731.

It is an arithmetic number, because the mean of its divisors is an integer number (143713551).

Almost surely, 2^1313510525 is an apocalyptic number.

It is an amenable number.

1313510525 is a deficient number, since it is larger than the sum of its proper divisors (411052087).

1313510525 is a wasteful number, since it uses less digits than its factorization.

1313510525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090640 (or 3090635 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1313510525 is about 36242.3857520445. The cubic root of 1313510525 is about 1095.1607042272.

Adding to 1313510525 its reverse (5250153131), we get a palindrome (6563663656).

The spelling of 1313510525 in words is "one billion, three hundred thirteen million, five hundred ten thousand, five hundred twenty-five".