25979194043 has 32 divisors (see below), whose sum is σ = 29074161600. Its totient is φ = 23208768000.

The previous prime is 25979194009. The next prime is 25979194049. The reversal of 25979194043 is 34049197952.

It is not a de Polignac number, because 25979194043 - 2¹² = 25979189947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25979194049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20029571 + ... + 20030867.

It is an arithmetic number, because the mean of its divisors is an integer number (908567550).

Almost surely, 2^25979194043 is an apocalyptic number.

25979194043 is a deficient number, since it is larger than the sum of its proper divisors (3094967557).

25979194043 is a wasteful number, since it uses less digits than its factorization.

25979194043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 53.

It can be divided in two parts, 25979 and 194043, that added together give a palindrome (220022).

The spelling of 25979194043 in words is "twenty-five billion, nine hundred seventy-nine million, one hundred ninety-four thousand, forty-three".