25731653 has 2 divisors, whose sum is σ = 25731654. Its totient is φ = 25731652.

The previous prime is 25731647. The next prime is 25731677. The reversal of 25731653 is 35613752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25573249 + 158404 = 5057^2 + 398^2 .

It is a cyclic number.

It is not a de Polignac number, because 25731653 - 2⁸ = 25731397 is a prime.

It is a super-2 number, since 2×25731653² = 1324235932224818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25731683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12865826 + 12865827.

It is an arithmetic number, because the mean of its divisors is an integer number (12865827).

Almost surely, 2^25731653 is an apocalyptic number.

It is an amenable number.

25731653 is a deficient number, since it is larger than the sum of its proper divisors (1).

25731653 is an equidigital number, since it uses as much as digits as its factorization.

25731653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 32.

The square root of 25731653 is about 5072.6376767910. The cubic root of 25731653 is about 295.2268789955.

The spelling of 25731653 in words is "twenty-five million, seven hundred thirty-one thousand, six hundred fifty-three".