25758493 has 2 divisors, whose sum is σ = 25758494. Its totient is φ = 25758492.

The previous prime is 25758479. The next prime is 25758497. The reversal of 25758493 is 39485752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19342404 + 6416089 = 4398^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 25758493 - 2⁵ = 25758461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25758497) 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, 12879246 + 12879247.

It is an arithmetic number, because the mean of its divisors is an integer number (12879247).

Almost surely, 2^25758493 is an apocalyptic number.

It is an amenable number.

25758493 is a deficient number, since it is larger than the sum of its proper divisors (1).

25758493 is an equidigital number, since it uses as much as digits as its factorization.

25758493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The square root of 25758493 is about 5075.2825537107. The cubic root of 25758493 is about 295.3294910840.

The spelling of 25758493 in words is "twenty-five million, seven hundred fifty-eight thousand, four hundred ninety-three".