25654943 has 2 divisors, whose sum is σ = 25654944. Its totient is φ = 25654942.

The previous prime is 25654933. The next prime is 25654963. The reversal of 25654943 is 34945652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25654943 - 2²⁴ = 8877727 is a prime.

It is a super-2 number, since 2×25654943² = 1316352200666498, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 25654897 and 25654906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25654933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12827471 + 12827472.

It is an arithmetic number, because the mean of its divisors is an integer number (12827472).

Almost surely, 2^25654943 is an apocalyptic number.

25654943 is a deficient number, since it is larger than the sum of its proper divisors (1).

25654943 is an equidigital number, since it uses as much as digits as its factorization.

25654943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

The square root of 25654943 is about 5065.0708780826. The cubic root of 25654943 is about 294.9332147964.

The spelling of 25654943 in words is "twenty-five million, six hundred fifty-four thousand, nine hundred forty-three".