25542304405 has 8 divisors (see below), whose sum is σ = 30657188952. Its totient is φ = 20429561088.

The previous prime is 25542304399. The next prime is 25542304427. The reversal of 25542304405 is 50440324552.

It can be written as a sum of positive squares in 4 ways, for example, as 4025521809 + 21516782596 = 63447^2 + 146686^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25542304405 - 2⁵ = 25542304373 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 508944 + ... + 556873.

It is an arithmetic number, because the mean of its divisors is an integer number (3832148619).

Almost surely, 2^25542304405 is an apocalyptic number.

It is an amenable number.

25542304405 is a deficient number, since it is larger than the sum of its proper divisors (5114884547).

25542304405 is a wasteful number, since it uses less digits than its factorization.

25542304405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070615.

The product of its (nonzero) digits is 96000, while the sum is 34.

Adding to 25542304405 its reverse (50440324552), we get a palindrome (75982628957).

The spelling of 25542304405 in words is "twenty-five billion, five hundred forty-two million, three hundred four thousand, four hundred five".