1325125013 has 4 divisors (see below), whose sum is σ = 1382739168. Its totient is φ = 1267510860.

The previous prime is 1325124991. The next prime is 1325125019. The reversal of 1325125013 is 3105215231.

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 1325125013 - 2¹² = 1325120917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 57614131 = 1325125013 / (1 + 3 + 2 + 5 + 1 + 2 + 5 + 0 + 1 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1325125013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1325125019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28807043 + ... + 28807088.

It is an arithmetic number, because the mean of its divisors is an integer number (345684792).

Almost surely, 2^1325125013 is an apocalyptic number.

It is an amenable number.

1325125013 is a deficient number, since it is larger than the sum of its proper divisors (57614155).

1325125013 is an equidigital number, since it uses as much as digits as its factorization.

1325125013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57614154.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 1325125013 is about 36402.2665915187. The cubic root of 1325125013 is about 1098.3791591586.

The spelling of 1325125013 in words is "one billion, three hundred twenty-five million, one hundred twenty-five thousand, thirteen".