25530006902401 has 4 divisors (see below), whose sum is σ = 25530742227204. Its totient is φ = 25529271577600.

The previous prime is 25530006902341. The next prime is 25530006902431. The reversal of 25530006902401 is 10420960003552.

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 5661806097025 + 19868200805376 = 2379455^2 + 4457376^2 .

It is a cyclic number.

It is not a de Polignac number, because 25530006902401 - 2¹⁷ = 25530006771329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25530006902431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367610320 + ... + 367679761.

It is an arithmetic number, because the mean of its divisors is an integer number (6382685556801).

Almost surely, 2^{25530006902401} is an apocalyptic number.

It is an amenable number.

25530006902401 is a deficient number, since it is larger than the sum of its proper divisors (735324803).

25530006902401 is an equidigital number, since it uses as much as digits as its factorization.

25530006902401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735324802.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 25530006902401 its reverse (10420960003552), we get a palindrome (35950966905953).

The spelling of 25530006902401 in words is "twenty-five trillion, five hundred thirty billion, six million, nine hundred two thousand, four hundred one".