25345533305 has 4 divisors (see below), whose sum is σ = 30414639972. Its totient is φ = 20276426640.

The previous prime is 25345533253. The next prime is 25345533337. The reversal of 25345533305 is 50333554352.

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 12260689984 + 13084843321 = 110728^2 + 114389^2 .

It is not a de Polignac number, because 25345533305 - 2¹⁰ = 25345532281 is a prime.

It is a Duffinian number.

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, 2534553326 + ... + 2534553335.

It is an arithmetic number, because the mean of its divisors is an integer number (7603659993).

Almost surely, 2^25345533305 is an apocalyptic number.

It is an amenable number.

25345533305 is a deficient number, since it is larger than the sum of its proper divisors (5069106667).

25345533305 is an equidigital number, since it uses as much as digits as its factorization.

25345533305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5069106666.

The product of its (nonzero) digits is 405000, while the sum is 38.

The spelling of 25345533305 in words is "twenty-five billion, three hundred forty-five million, five hundred thirty-three thousand, three hundred five".