25105052252251 has 4 divisors (see below), whose sum is σ = 25105100549872. Its totient is φ = 25105003954632.

The previous prime is 25105052252227. The next prime is 25105052252323. The reversal of 25105052252251 is 15225225050152.

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

It is a cyclic number.

It is not a de Polignac number, because 25105052252251 - 2⁷ = 25105052252123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25105052252251.

It is not an unprimeable number, because it can be changed into a prime (25105052252351) 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, 23360535 + ... + 24411568.

It is an arithmetic number, because the mean of its divisors is an integer number (6276275137468).

Almost surely, 2^{25105052252251} is an apocalyptic number.

25105052252251 is a deficient number, since it is larger than the sum of its proper divisors (48297621).

25105052252251 is an equidigital number, since it uses as much as digits as its factorization.

25105052252251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48297620.

The product of its (nonzero) digits is 100000, while the sum is 37.

The spelling of 25105052252251 in words is "twenty-five trillion, one hundred five billion, fifty-two million, two hundred fifty-two thousand, two hundred fifty-one".