25056502745 has 4 divisors (see below), whose sum is σ = 30067803300. Its totient is φ = 20045202192.

The previous prime is 25056502673. The next prime is 25056502747. The reversal of 25056502745 is 54720565052.

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 17596553104 + 7459949641 = 132652^2 + 86371^2 .

It is a cyclic number.

It is not a de Polignac number, because 25056502745 - 2⁸ = 25056502489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25056502747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2505650270 + ... + 2505650279.

It is an arithmetic number, because the mean of its divisors is an integer number (7516950825).

Almost surely, 2^25056502745 is an apocalyptic number.

It is an amenable number.

25056502745 is a deficient number, since it is larger than the sum of its proper divisors (5011300555).

25056502745 is an equidigital number, since it uses as much as digits as its factorization.

25056502745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011300554.

The product of its (nonzero) digits is 420000, while the sum is 41.

The spelling of 25056502745 in words is "twenty-five billion, fifty-six million, five hundred two thousand, seven hundred forty-five".