25214513305431 has 4 divisors (see below), whose sum is σ = 33619351073912. Its totient is φ = 16809675536952.

The previous prime is 25214513305427. The next prime is 25214513305447. The reversal of 25214513305431 is 13450331541252.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 25214513305431 - 2² = 25214513305427 is a prime.

It is a super-2 number, since 2×25214513305431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25214513305431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25214513305831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4202418884236 + ... + 4202418884241.

It is an arithmetic number, because the mean of its divisors is an integer number (8404837768478).

Almost surely, 2^{25214513305431} is an apocalyptic number.

25214513305431 is a deficient number, since it is larger than the sum of its proper divisors (8404837768481).

25214513305431 is an equidigital number, since it uses as much as digits as its factorization.

25214513305431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8404837768480.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 25214513305431 its reverse (13450331541252), we get a palindrome (38664844846683).

The spelling of 25214513305431 in words is "twenty-five trillion, two hundred fourteen billion, five hundred thirteen million, three hundred five thousand, four hundred thirty-one".