25051434401 has 4 divisors (see below), whose sum is σ = 28630210752. Its totient is φ = 21472658052.

The previous prime is 25051434391. The next prime is 25051434437. The reversal of 25051434401 is 10443415052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25051434401 - 2¹⁴ = 25051418017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25051434451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1789388165 + ... + 1789388178.

It is an arithmetic number, because the mean of its divisors is an integer number (7157552688).

Almost surely, 2^25051434401 is an apocalyptic number.

It is an amenable number.

25051434401 is a deficient number, since it is larger than the sum of its proper divisors (3578776351).

25051434401 is an equidigital number, since it uses as much as digits as its factorization.

25051434401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578776350.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 25051434401 its reverse (10443415052), we get a palindrome (35494849453).

The spelling of 25051434401 in words is "twenty-five billion, fifty-one million, four hundred thirty-four thousand, four hundred one".