25456493 has 2 divisors, whose sum is σ = 25456494. Its totient is φ = 25456492.

The previous prime is 25456489. The next prime is 25456499. The reversal of 25456493 is 39465452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12974404 + 12482089 = 3602^2 + 3533^2 .

It is a cyclic number.

It is not a de Polignac number, because 25456493 - 2² = 25456489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25456499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12728246 + 12728247.

It is an arithmetic number, because the mean of its divisors is an integer number (12728247).

Almost surely, 2^25456493 is an apocalyptic number.

It is an amenable number.

25456493 is a deficient number, since it is larger than the sum of its proper divisors (1).

25456493 is an equidigital number, since it uses as much as digits as its factorization.

25456493 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 25456493 is about 5045.4427952361. The cubic root of 25456493 is about 294.1707748019.

The spelling of 25456493 in words is "twenty-five million, four hundred fifty-six thousand, four hundred ninety-three".