25828493 has 2 divisors, whose sum is σ = 25828494. Its totient is φ = 25828492.

The previous prime is 25828477. The next prime is 25828499. The reversal of 25828493 is 39482852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13564489 + 12264004 = 3683^2 + 3502^2 .

It is a cyclic number.

It is not a de Polignac number, because 25828493 - 2⁴ = 25828477 is a prime.

It is a super-2 number, since 2×25828493² = 1334222101302098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25828493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25828499) 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, 12914246 + 12914247.

It is an arithmetic number, because the mean of its divisors is an integer number (12914247).

Almost surely, 2^25828493 is an apocalyptic number.

It is an amenable number.

25828493 is a deficient number, since it is larger than the sum of its proper divisors (1).

25828493 is an equidigital number, since it uses as much as digits as its factorization.

25828493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 41.

The square root of 25828493 is about 5082.1740426711. The cubic root of 25828493 is about 295.5967733599.

It can be divided in two parts, 2582849 and 3, that added together give a palindrome (2582852).

The spelling of 25828493 in words is "twenty-five million, eight hundred twenty-eight thousand, four hundred ninety-three".