25354421 has 2 divisors, whose sum is σ = 25354422. Its totient is φ = 25354420.

The previous prime is 25354411. The next prime is 25354447. The reversal of 25354421 is 12445352.

It is a happy number.

It is an a-pointer prime, because the next prime (25354447) can be obtained adding 25354421 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21298225 + 4056196 = 4615^2 + 2014^2 .

It is a cyclic number.

It is not a de Polignac number, because 25354421 - 2¹⁴ = 25338037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25354411) 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, 12677210 + 12677211.

It is an arithmetic number, because the mean of its divisors is an integer number (12677211).

Almost surely, 2^25354421 is an apocalyptic number.

It is an amenable number.

25354421 is a deficient number, since it is larger than the sum of its proper divisors (1).

25354421 is an equidigital number, since it uses as much as digits as its factorization.

25354421 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 25354421 is about 5035.3173683493. The cubic root of 25354421 is about 293.7770727425. Note that the first 3 decimals are identical.

Adding to 25354421 its reverse (12445352), we get a palindrome (37799773).

The spelling of 25354421 in words is "twenty-five million, three hundred fifty-four thousand, four hundred twenty-one".