26525141309 has 4 divisors (see below), whose sum is σ = 26529294204. Its totient is φ = 26520988416.

The previous prime is 26525141303. The next prime is 26525141329. The reversal of 26525141309 is 90314152562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2297284900 + 24227856409 = 47930^2 + 155653^2 .

It is a cyclic number.

It is not a de Polignac number, because 26525141309 - 2⁸ = 26525141053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26525141303) 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, 2066852 + ... + 2079645.

It is an arithmetic number, because the mean of its divisors is an integer number (6632323551).

Almost surely, 2^26525141309 is an apocalyptic number.

It is an amenable number.

26525141309 is a deficient number, since it is larger than the sum of its proper divisors (4152895).

26525141309 is an equidigital number, since it uses as much as digits as its factorization.

26525141309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152894.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 26525141309 in words is "twenty-six billion, five hundred twenty-five million, one hundred forty-one thousand, three hundred nine".