25412014405 has 4 divisors (see below), whose sum is σ = 30494417292. Its totient is φ = 20329611520.

The previous prime is 25412014391. The next prime is 25412014501. The reversal of 25412014405 is 50441021452.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3761246241 + 21650768164 = 61329^2 + 147142^2 .

It is not a de Polignac number, because 25412014405 - 2⁵ = 25412014373 is a prime.

It is a super-2 number, since 2×25412014405² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2541201436 + ... + 2541201445.

It is an arithmetic number, because the mean of its divisors is an integer number (7623604323).

Almost surely, 2^25412014405 is an apocalyptic number.

It is an amenable number.

25412014405 is a deficient number, since it is larger than the sum of its proper divisors (5082402887).

25412014405 is an equidigital number, since it uses as much as digits as its factorization.

25412014405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5082402886.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 25412014405 its reverse (50441021452), we get a palindrome (75853035857).

The spelling of 25412014405 in words is "twenty-five billion, four hundred twelve million, fourteen thousand, four hundred five".