25142957443 has 4 divisors (see below), whose sum is σ = 25149469968. Its totient is φ = 25136444920.

The previous prime is 25142957417. The next prime is 25142957471. The reversal of 25142957443 is 34475924152.

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 25142957443 - 2²¹ = 25140860291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25142957393 and 25142957402.

It is not an unprimeable number, because it can be changed into a prime (25142997443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3250468 + ... + 3258193.

It is an arithmetic number, because the mean of its divisors is an integer number (6287367492).

Almost surely, 2^25142957443 is an apocalyptic number.

25142957443 is a deficient number, since it is larger than the sum of its proper divisors (6512525).

25142957443 is an equidigital number, since it uses as much as digits as its factorization.

25142957443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512524.

The product of its digits is 1209600, while the sum is 46.

The spelling of 25142957443 in words is "twenty-five billion, one hundred forty-two million, nine hundred fifty-seven thousand, four hundred forty-three".