25044542431 has 2 divisors, whose sum is σ = 25044542432. Its totient is φ = 25044542430.

The previous prime is 25044542401. The next prime is 25044542449. The reversal of 25044542431 is 13424544052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25044542431 - 2¹⁵ = 25044509663 is a prime.

It is a super-2 number, since 2×25044542431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25044542401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12522271215 + 12522271216.

It is an arithmetic number, because the mean of its divisors is an integer number (12522271216).

Almost surely, 2^25044542431 is an apocalyptic number.

25044542431 is a deficient number, since it is larger than the sum of its proper divisors (1).

25044542431 is an equidigital number, since it uses as much as digits as its factorization.

25044542431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 76800, while the sum is 34.

The spelling of 25044542431 in words is "twenty-five billion, forty-four million, five hundred forty-two thousand, four hundred thirty-one".