25093421 has 2 divisors, whose sum is σ = 25093422. Its totient is φ = 25093420.

The previous prime is 25093379. The next prime is 25093427. The reversal of 25093421 is 12439052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23629321 + 1464100 = 4861^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 25093421 - 2¹⁴ = 25077037 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 (25093427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12546710 + 12546711.

It is an arithmetic number, because the mean of its divisors is an integer number (12546711).

Almost surely, 2^25093421 is an apocalyptic number.

It is an amenable number.

25093421 is a deficient number, since it is larger than the sum of its proper divisors (1).

25093421 is an equidigital number, since it uses as much as digits as its factorization.

25093421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 25093421 is about 5009.3333887854. Note that the first 4 decimals coincide. The cubic root of 25093421 is about 292.7655406322.

The spelling of 25093421 in words is "twenty-five million, ninety-three thousand, four hundred twenty-one".