25455653 has 2 divisors, whose sum is σ = 25455654. Its totient is φ = 25455652.

The previous prime is 25455631. The next prime is 25455671. The reversal of 25455653 is 35655452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18809569 + 6646084 = 4337^2 + 2578^2 .

It is a cyclic number.

It is not a de Polignac number, because 25455653 - 2⁶ = 25455589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25455253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12727826 + 12727827.

It is an arithmetic number, because the mean of its divisors is an integer number (12727827).

Almost surely, 2^25455653 is an apocalyptic number.

It is an amenable number.

25455653 is a deficient number, since it is larger than the sum of its proper divisors (1).

25455653 is an equidigital number, since it uses as much as digits as its factorization.

25455653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90000, while the sum is 35.

The square root of 25455653 is about 5045.3595511123. The cubic root of 25455653 is about 294.1675391354.

The spelling of 25455653 in words is "twenty-five million, four hundred fifty-five thousand, six hundred fifty-three".