25230051421 has 4 divisors (see below), whose sum is σ = 25236160092. Its totient is φ = 25223942752.

The previous prime is 25230051403. The next prime is 25230051433. The reversal of 25230051421 is 12415003252.

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 17288568196 + 7941483225 = 131486^2 + 89115^2 .

It is a cyclic number.

It is not a de Polignac number, because 25230051421 - 2¹¹ = 25230049373 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 (25230051221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3048136 + ... + 3056401.

It is an arithmetic number, because the mean of its divisors is an integer number (6309040023).

Almost surely, 2^25230051421 is an apocalyptic number.

It is an amenable number.

25230051421 is a deficient number, since it is larger than the sum of its proper divisors (6108671).

25230051421 is an equidigital number, since it uses as much as digits as its factorization.

25230051421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108670.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 25230051421 its reverse (12415003252), we get a palindrome (37645054673).

The spelling of 25230051421 in words is "twenty-five billion, two hundred thirty million, fifty-one thousand, four hundred twenty-one".