25424005553 has 4 divisors (see below), whose sum is σ = 25424777328. Its totient is φ = 25423233780.

The previous prime is 25424005547. The next prime is 25424005637. The reversal of 25424005553 is 35550042452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25424005553 - 2¹⁸ = 25423743409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25424005543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334163 + ... + 403128.

It is an arithmetic number, because the mean of its divisors is an integer number (6356194332).

Almost surely, 2^25424005553 is an apocalyptic number.

It is an amenable number.

25424005553 is a deficient number, since it is larger than the sum of its proper divisors (771775).

25424005553 is an equidigital number, since it uses as much as digits as its factorization.

25424005553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771774.

The product of its (nonzero) digits is 120000, while the sum is 35.

The spelling of 25424005553 in words is "twenty-five billion, four hundred twenty-four million, five thousand, five hundred fifty-three".