25601400005 has 8 divisors (see below), whose sum is σ = 30726390552. Its totient is φ = 20477979648.

The previous prime is 25601399969. The next prime is 25601400007. The reversal of 25601400005 is 50000410652.

It can be written as a sum of positive squares in 4 ways, for example, as 16012877764 + 9588522241 = 126542^2 + 97921^2 .

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 25601400005 - 2⁸ = 25601399749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25601400007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356372 + ... + 422141.

It is an arithmetic number, because the mean of its divisors is an integer number (3840798819).

Almost surely, 2^25601400005 is an apocalyptic number.

It is an amenable number.

25601400005 is a deficient number, since it is larger than the sum of its proper divisors (5124990547).

25601400005 is an equidigital number, since it uses as much as digits as its factorization.

25601400005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785095.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 25601400005 its reverse (50000410652), we get a palindrome (75601810657).

The spelling of 25601400005 in words is "twenty-five billion, six hundred one million, four hundred thousand, five".