2525025309 has 4 divisors (see below), whose sum is σ = 3366700416. Its totient is φ = 1683350204.

The previous prime is 2525025289. The next prime is 2525025323. The reversal of 2525025309 is 9035205252.

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 2525025309 - 2⁹ = 2525024797 is a prime.

It is a super-2 number, since 2×2525025309² = 12751505622181090962, which contains 22 as substring.

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 2525025309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525025379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420837549 + ... + 420837554.

It is an arithmetic number, because the mean of its divisors is an integer number (841675104).

Almost surely, 2^2525025309 is an apocalyptic number.

It is an amenable number.

2525025309 is a deficient number, since it is larger than the sum of its proper divisors (841675107).

2525025309 is an equidigital number, since it uses as much as digits as its factorization.

2525025309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841675106.

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 2525025309 is about 50249.6299389359. The cubic root of 2525025309 is about 1361.7223904348.

The spelling of 2525025309 in words is "two billion, five hundred twenty-five million, twenty-five thousand, three hundred nine".