25250050505 has 4 divisors (see below), whose sum is σ = 30300060612. Its totient is φ = 20200040400.

The previous prime is 25250050493. The next prime is 25250050517. The reversal of 25250050505 is 50505005252.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (25250050493) and next prime (25250050517).

It can be written as a sum of positive squares in 2 ways, for example, as 13174677961 + 12075372544 = 114781^2 + 109888^2 .

It is not a de Polignac number, because 25250050505 - 2⁸ = 25250050249 is a prime.

It is a Duffinian number.

25250050505 is a modest number, since divided by 50505 gives 25250 as remainder.

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, 2525005046 + ... + 2525005055.

It is an arithmetic number, because the mean of its divisors is an integer number (7575015153).

Almost surely, 2^25250050505 is an apocalyptic number.

It is an amenable number.

25250050505 is a deficient number, since it is larger than the sum of its proper divisors (5050010107).

25250050505 is an equidigital number, since it uses as much as digits as its factorization.

25250050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050010106.

The product of its (nonzero) digits is 12500, while the sum is 29.

Adding to 25250050505 its reverse (50505005252), we get a palindrome (75755055757).

The spelling of 25250050505 in words is "twenty-five billion, two hundred fifty million, fifty thousand, five hundred five".