25213354345 has 4 divisors (see below), whose sum is σ = 30256025220. Its totient is φ = 20170683472.

The previous prime is 25213354291. The next prime is 25213354363. The reversal of 25213354345 is 54345331252.

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 15419678976 + 9793675369 = 124176^2 + 98963^2 .

It is a cyclic number.

It is not a de Polignac number, because 25213354345 - 2⁹ = 25213353833 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2521335430 + ... + 2521335439.

It is an arithmetic number, because the mean of its divisors is an integer number (7564006305).

Almost surely, 2^25213354345 is an apocalyptic number.

It is an amenable number.

25213354345 is a deficient number, since it is larger than the sum of its proper divisors (5042670875).

25213354345 is an equidigital number, since it uses as much as digits as its factorization.

25213354345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042670874.

The product of its digits is 216000, while the sum is 37.

Adding to 25213354345 its reverse (54345331252), we get a palindrome (79558685597).

The spelling of 25213354345 in words is "twenty-five billion, two hundred thirteen million, three hundred fifty-four thousand, three hundred forty-five".