25456448334 has 32 divisors (see below), whose sum is σ = 51790400640. Its totient is φ = 8339313312.

The previous prime is 25456448333. The next prime is 25456448389. The reversal of 25456448334 is 43384465452.

It is a happy number.

It is a super-2 number, since 2×25456448334² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25456448333) 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 15 ways as a sum of consecutive naturals, for example, 1619517 + ... + 1635159.

It is an arithmetic number, because the mean of its divisors is an integer number (1618450020).

Almost surely, 2^25456448334 is an apocalyptic number.

25456448334 is an abundant number, since it is smaller than the sum of its proper divisors (26333952306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25456448334 is a wasteful number, since it uses less digits than its factorization.

25456448334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20304.

The product of its digits is 5529600, while the sum is 48.

The spelling of 25456448334 in words is "twenty-five billion, four hundred fifty-six million, four hundred forty-eight thousand, three hundred thirty-four".