25341521 has 2 divisors, whose sum is σ = 25341522. Its totient is φ = 25341520.

The previous prime is 25341499. The next prime is 25341529. The reversal of 25341521 is 12514352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 11316496 = 3745^2 + 3364^2 .

It is a cyclic number.

It is not a de Polignac number, because 25341521 - 2⁶ = 25341457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25341529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12670760 + 12670761.

It is an arithmetic number, because the mean of its divisors is an integer number (12670761).

Almost surely, 2^25341521 is an apocalyptic number.

It is an amenable number.

25341521 is a deficient number, since it is larger than the sum of its proper divisors (1).

25341521 is an equidigital number, since it uses as much as digits as its factorization.

25341521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 23.

The square root of 25341521 is about 5034.0362533458. The cubic root of 25341521 is about 293.7272409710.

Adding to 25341521 its reverse (12514352), we get a palindrome (37855873).

The spelling of 25341521 in words is "twenty-five million, three hundred forty-one thousand, five hundred twenty-one".