2315121325 has 12 divisors (see below), whose sum is σ = 3131728128. Its totient is φ = 1683724400.

The previous prime is 2315121313. The next prime is 2315121337. The reversal of 2315121325 is 5231215132.

It is an interprime number because it is at equal distance from previous prime (2315121313) and next prime (2315121337).

It is not a de Polignac number, because 2315121325 - 2⁹ = 2315120813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2315121325.

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, 4209037 + ... + 4209586.

It is an arithmetic number, because the mean of its divisors is an integer number (260977344).

Almost surely, 2^2315121325 is an apocalyptic number.

2315121325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2315121325 is a deficient number, since it is larger than the sum of its proper divisors (816606803).

2315121325 is a wasteful number, since it uses less digits than its factorization.

2315121325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8418644 (or 8418639 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 2315121325 is about 48115.7076743136. The cubic root of 2315121325 is about 1322.8925939475.

Adding to 2315121325 its reverse (5231215132), we get a palindrome (7546336457).

The spelling of 2315121325 in words is "two billion, three hundred fifteen million, one hundred twenty-one thousand, three hundred twenty-five".