25400293 has 2 divisors, whose sum is σ = 25400294. Its totient is φ = 25400292.

The previous prime is 25400281. The next prime is 25400299. The reversal of 25400293 is 39200452.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16507969 + 8892324 = 4063^2 + 2982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25400293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25400299) 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, 12700146 + 12700147.

It is an arithmetic number, because the mean of its divisors is an integer number (12700147).

Almost surely, 2^25400293 is an apocalyptic number.

It is an amenable number.

25400293 is a deficient number, since it is larger than the sum of its proper divisors (1).

25400293 is an equidigital number, since it uses as much as digits as its factorization.

25400293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 25400293 is about 5039.8703356336. The cubic root of 25400293 is about 293.9541361810.

The spelling of 25400293 in words is "twenty-five million, four hundred thousand, two hundred ninety-three".