25930569745 has 4 divisors (see below), whose sum is σ = 31116683700. Its totient is φ = 20744455792.

The previous prime is 25930569739. The next prime is 25930569757. The reversal of 25930569745 is 54796503952.

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 10609824016 + 15320745729 = 103004^2 + 123777^2 .

It is a cyclic number.

It is not a de Polignac number, because 25930569745 - 2¹⁵ = 25930536977 is a prime.

It is a super-3 number, since 3×25930569745³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2593056970 + ... + 2593056979.

It is an arithmetic number, because the mean of its divisors is an integer number (7779170925).

Almost surely, 2^25930569745 is an apocalyptic number.

It is an amenable number.

25930569745 is a deficient number, since it is larger than the sum of its proper divisors (5186113955).

25930569745 is an equidigital number, since it uses as much as digits as its factorization.

25930569745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186113954.

The product of its (nonzero) digits is 10206000, while the sum is 55.

The spelling of 25930569745 in words is "twenty-five billion, nine hundred thirty million, five hundred sixty-nine thousand, seven hundred forty-five".