25125450114221 has 4 divisors (see below), whose sum is σ = 25131430944444. Its totient is φ = 25119469284000.

The previous prime is 25125450114199. The next prime is 25125450114251. The reversal of 25125450114221 is 12241105452152.

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 13580330522500 + 11545119591721 = 3685150^2 + 3397811^2 .

It is a cyclic number.

It is not a de Polignac number, because 25125450114221 - 2⁶ = 25125450114157 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 (25125450114251) 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, 2990408810 + ... + 2990417211.

It is an arithmetic number, because the mean of its divisors is an integer number (6282857736111).

Almost surely, 2^{25125450114221} is an apocalyptic number.

It is an amenable number.

25125450114221 is a deficient number, since it is larger than the sum of its proper divisors (5980830223).

25125450114221 is an equidigital number, since it uses as much as digits as its factorization.

25125450114221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5980830222.

The product of its (nonzero) digits is 32000, while the sum is 35.

Adding to 25125450114221 its reverse (12241105452152), we get a palindrome (37366555566373).

The spelling of 25125450114221 in words is "twenty-five trillion, one hundred twenty-five billion, four hundred fifty million, one hundred fourteen thousand, two hundred twenty-one".