25265040005 has 8 divisors (see below), whose sum is σ = 30336853752. Its totient is φ = 20199494848.

The previous prime is 25265039971. The next prime is 25265040013. The reversal of 25265040005 is 50004056252.

It can be written as a sum of positive squares in 4 ways, for example, as 4962779809 + 20302260196 = 70447^2 + 142486^2 .

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 25265040005 - 2¹⁸ = 25264777861 is a prime.

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 25265040005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1558274 + ... + 1574403.

It is an arithmetic number, because the mean of its divisors is an integer number (3792106719).

Almost surely, 2^25265040005 is an apocalyptic number.

It is an amenable number.

25265040005 is a deficient number, since it is larger than the sum of its proper divisors (5071813747).

25265040005 is a wasteful number, since it uses less digits than its factorization.

25265040005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134295.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 25265040005 its reverse (50004056252), we get a palindrome (75269096257).

The spelling of 25265040005 in words is "twenty-five billion, two hundred sixty-five million, forty thousand, five".