1513311225 has 24 divisors (see below), whose sum is σ = 2517963840. Its totient is φ = 801952320.

The previous prime is 1513311223. The next prime is 1513311229. The reversal of 1513311225 is 5221133151.

It is not a de Polignac number, because 1513311225 - 2¹ = 1513311223 is a prime.

It is a super-2 number, since 2×1513311225² = 4580221727422001250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1513311195 and 1513311204.

It is not an unprimeable number, because it can be changed into a prime (1513311223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52485 + ... + 76034.

It is an arithmetic number, because the mean of its divisors is an integer number (104915160).

Almost surely, 2^1513311225 is an apocalyptic number.

1513311225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1513311225 is a deficient number, since it is larger than the sum of its proper divisors (1004652615).

1513311225 is a wasteful number, since it uses less digits than its factorization.

1513311225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128689 (or 128684 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 1513311225 is about 38901.3010707868. The cubic root of 1513311225 is about 1148.0903972915.

Adding to 1513311225 its reverse (5221133151), we get a palindrome (6734444376).

The spelling of 1513311225 in words is "one billion, five hundred thirteen million, three hundred eleven thousand, two hundred twenty-five".