25305440230353 has 4 divisors (see below), whose sum is σ = 33740586973808. Its totient is φ = 16870293486900.

The previous prime is 25305440230351. The next prime is 25305440230379. The reversal of 25305440230353 is 35303204450352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25305440230353 - 2¹ = 25305440230351 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25305440230351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4217573371723 + ... + 4217573371728.

It is an arithmetic number, because the mean of its divisors is an integer number (8435146743452).

Almost surely, 2^{25305440230353} is an apocalyptic number.

It is an amenable number.

25305440230353 is a deficient number, since it is larger than the sum of its proper divisors (8435146743455).

25305440230353 is an equidigital number, since it uses as much as digits as its factorization.

25305440230353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8435146743454.

The product of its (nonzero) digits is 648000, while the sum is 39.

The spelling of 25305440230353 in words is "twenty-five trillion, three hundred five billion, four hundred forty million, two hundred thirty thousand, three hundred fifty-three".