25252500505 has 4 divisors (see below), whose sum is σ = 30303000612. Its totient is φ = 20202000400.

The previous prime is 25252500499. The next prime is 25252500509. The reversal of 25252500505 is 50500525252.

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 6380335129 + 18872165376 = 79877^2 + 137376^2 .

It is not a de Polignac number, because 25252500505 - 2⁵ = 25252500473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25252500509) 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, 2525250046 + ... + 2525250055.

It is an arithmetic number, because the mean of its divisors is an integer number (7575750153).

Almost surely, 2^25252500505 is an apocalyptic number.

It is an amenable number.

25252500505 is a deficient number, since it is larger than the sum of its proper divisors (5050500107).

25252500505 is an equidigital number, since it uses as much as digits as its factorization.

25252500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050500106.

The product of its (nonzero) digits is 25000, while the sum is 31.

The spelling of 25252500505 in words is "twenty-five billion, two hundred fifty-two million, five hundred thousand, five hundred five".