25014421 has 2 divisors, whose sum is σ = 25014422. Its totient is φ = 25014420.

The previous prime is 25014413. The next prime is 25014439. The reversal of 25014421 is 12441052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13359025 + 11655396 = 3655^2 + 3414^2 .

It is a cyclic number.

It is not a de Polignac number, because 25014421 - 2³ = 25014413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25014461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12507210 + 12507211.

It is an arithmetic number, because the mean of its divisors is an integer number (12507211).

Almost surely, 2^25014421 is an apocalyptic number.

It is an amenable number.

25014421 is a deficient number, since it is larger than the sum of its proper divisors (1).

25014421 is an equidigital number, since it uses as much as digits as its factorization.

25014421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 25014421 is about 5001.4418920947. The cubic root of 25014421 is about 292.4579860273.

Adding to 25014421 its reverse (12441052), we get a palindrome (37455473).

The spelling of 25014421 in words is "twenty-five million, fourteen thousand, four hundred twenty-one".