25113013309 has 8 divisors (see below), whose sum is σ = 26704374840. Its totient is φ = 23534332416.

The previous prime is 25113013297. The next prime is 25113013327. The reversal of 25113013309 is 90331031152.

It can be written as a sum of positive squares in 4 ways, for example, as 31956409 + 25081056900 = 5653^2 + 158370^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25113013309 - 2¹³ = 25113005117 is a prime.

It is a super-2 number, since 2×25113013309² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25113013369) 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 7 ways as a sum of consecutive naturals, for example, 3166074 + ... + 3173995.

It is an arithmetic number, because the mean of its divisors is an integer number (3338046855).

Almost surely, 2^25113013309 is an apocalyptic number.

It is an amenable number.

25113013309 is a deficient number, since it is larger than the sum of its proper divisors (1591361531).

25113013309 is a wasteful number, since it uses less digits than its factorization.

25113013309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340319.

The product of its (nonzero) digits is 2430, while the sum is 28.

The spelling of 25113013309 in words is "twenty-five billion, one hundred thirteen million, thirteen thousand, three hundred nine".