25534542444 has 24 divisors (see below), whose sum is σ = 59583948480. Its totient is φ = 8511035664.

The previous prime is 25534542433. The next prime is 25534542461. The reversal of 25534542444 is 44424543552.

It is a junction number, because it is equal to n+sod(n) for n = 25534542396 and 25534542405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211927 + ... + 309809.

It is an arithmetic number, because the mean of its divisors is an integer number (2482664520).

Almost surely, 2^25534542444 is an apocalyptic number.

It is an amenable number.

25534542444 is an abundant number, since it is smaller than the sum of its proper divisors (34049406036).

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

25534542444 is a wasteful number, since it uses less digits than its factorization.

25534542444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119629 (or 119627 counting only the distinct ones).

The product of its digits is 1536000, while the sum is 42.

The spelling of 25534542444 in words is "twenty-five billion, five hundred thirty-four million, five hundred forty-two thousand, four hundred forty-four".