25421453 has 2 divisors, whose sum is σ = 25421454. Its totient is φ = 25421452.

The previous prime is 25421423. The next prime is 25421483. The reversal of 25421453 is 35412452.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (25421423) and next prime (25421483).

It can be written as a sum of positive squares in only one way, i.e., 20811844 + 4609609 = 4562^2 + 2147^2 .

It is a cyclic number.

It is not a de Polignac number, because 25421453 - 2¹⁴ = 25405069 is a prime.

It is equal to p_1590560 and since 25421453 and 1590560 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25421413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12710726 + 12710727.

It is an arithmetic number, because the mean of its divisors is an integer number (12710727).

Almost surely, 2^25421453 is an apocalyptic number.

It is an amenable number.

25421453 is a deficient number, since it is larger than the sum of its proper divisors (1).

25421453 is an equidigital number, since it uses as much as digits as its factorization.

25421453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4800, while the sum is 26.

The square root of 25421453 is about 5041.9691589695. The cubic root of 25421453 is about 294.0357407920.

Subtracting 25421453 from its reverse (35412452), we obtain a palindrome (9990999).

The spelling of 25421453 in words is "twenty-five million, four hundred twenty-one thousand, four hundred fifty-three".