25456553 has 12 divisors (see below), whose sum is σ = 26515008. Its totient is φ = 24433080.

The previous prime is 25456547. The next prime is 25456567. The reversal of 25456553 is 35565452.

It is not a de Polignac number, because 25456553 - 2⁶ = 25456489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25456853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247100 + ... + 247202.

It is an arithmetic number, because the mean of its divisors is an integer number (2209584).

Almost surely, 2^25456553 is an apocalyptic number.

It is an amenable number.

25456553 is a deficient number, since it is larger than the sum of its proper divisors (1058455).

25456553 is an equidigital number, since it uses as much as digits as its factorization.

25456553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 233 counting only the distinct ones).

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

The square root of 25456553 is about 5045.4487411924. The cubic root of 25456553 is about 294.1710059183.

The spelling of 25456553 in words is "twenty-five million, four hundred fifty-six thousand, five hundred fifty-three".