25787545343 has 4 divisors (see below), whose sum is σ = 29471480400. Its totient is φ = 22103610288.

The previous prime is 25787545339. The next prime is 25787545363. The reversal of 25787545343 is 34354578752.

It is a happy number.

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 25787545343 - 2² = 25787545339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25787545363) by changing a digit.

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, 1841967518 + ... + 1841967531.

It is an arithmetic number, because the mean of its divisors is an integer number (7367870100).

Almost surely, 2^25787545343 is an apocalyptic number.

25787545343 is a deficient number, since it is larger than the sum of its proper divisors (3683935057).

25787545343 is an equidigital number, since it uses as much as digits as its factorization.

25787545343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683935056.

The product of its digits is 14112000, while the sum is 53.

The spelling of 25787545343 in words is "twenty-five billion, seven hundred eighty-seven million, five hundred forty-five thousand, three hundred forty-three".