25201051052005 has 8 divisors (see below), whose sum is σ = 32020158983832. Its totient is φ = 18974909027328.

The previous prime is 25201051051997. The next prime is 25201051052029. The reversal of 25201051052005 is 50025015010252.

It can be written as a sum of positive squares in 4 ways, for example, as 11608895995489 + 13592155056516 = 3407183^2 + 3686754^2 .

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 25201051052005 - 2³ = 25201051051997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148241476692 + ... + 148241476861.

It is an arithmetic number, because the mean of its divisors is an integer number (4002519872979).

Almost surely, 2^{25201051052005} is an apocalyptic number.

It is an amenable number.

25201051052005 is a deficient number, since it is larger than the sum of its proper divisors (6819107931827).

25201051052005 is a wasteful number, since it uses less digits than its factorization.

25201051052005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296482953575.

The product of its (nonzero) digits is 5000, while the sum is 28.

Adding to 25201051052005 its reverse (50025015010252), we get a palindrome (75226066062257).

The spelling of 25201051052005 in words is "twenty-five trillion, two hundred one billion, fifty-one million, fifty-two thousand, five".