1361317125 has 32 divisors (see below), whose sum is σ = 2588841216. Its totient is φ = 622315200.

The previous prime is 1361317099. The next prime is 1361317129. The reversal of 1361317125 is 5217131631.

It is not a de Polignac number, because 1361317125 - 2¹⁰ = 1361316101 is a prime.

It is a super-3 number, since 3×1361317125³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1361317092 and 1361317101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361317129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256674 + ... + 261923.

It is an arithmetic number, because the mean of its divisors is an integer number (80901288).

Almost surely, 2^1361317125 is an apocalyptic number.

1361317125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361317125 is a deficient number, since it is larger than the sum of its proper divisors (1227524091).

1361317125 is an equidigital number, since it uses as much as digits as its factorization.

1361317125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518622 (or 518612 counting only the distinct ones).

The product of its digits is 3780, while the sum is 30.

The square root of 1361317125 is about 36896.0312906415. The cubic root of 1361317125 is about 1108.2892037128.

Adding to 1361317125 its reverse (5217131631), we get a palindrome (6578448756).

The spelling of 1361317125 in words is "one billion, three hundred sixty-one million, three hundred seventeen thousand, one hundred twenty-five".