3125243513 has 4 divisors (see below), whose sum is σ = 3571706880. Its totient is φ = 2678780148.

The previous prime is 3125243497. The next prime is 3125243533. The reversal of 3125243513 is 3153425213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3125243513 - 2⁴ = 3125243497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3125243533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223231673 + ... + 223231686.

It is an arithmetic number, because the mean of its divisors is an integer number (892926720).

Almost surely, 2^3125243513 is an apocalyptic number.

It is an amenable number.

3125243513 is a deficient number, since it is larger than the sum of its proper divisors (446463367).

3125243513 is an equidigital number, since it uses as much as digits as its factorization.

3125243513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446463366.

The product of its digits is 10800, while the sum is 29.

The square root of 3125243513 is about 55903.8774415514. The cubic root of 3125243513 is about 1462.0468433911.

Adding to 3125243513 its reverse (3153425213), we get a palindrome (6278668726).

The spelling of 3125243513 in words is "three billion, one hundred twenty-five million, two hundred forty-three thousand, five hundred thirteen".