25400550434450 has 24 divisors (see below), whose sum is σ = 47248518745008. Its totient is φ = 10159468574480.

The previous prime is 25400550434431. The next prime is 25400550434513. The reversal of 25400550434450 is 5443405500452.

It is a junction number, because it is equal to n+sod(n) for n = 25400550434398 and 25400550434407.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 18107072 + ... + 19459371.

It is an arithmetic number, because the mean of its divisors is an integer number (1968688281042).

Almost surely, 2^{25400550434450} is an apocalyptic number.

25400550434450 is a deficient number, since it is larger than the sum of its proper divisors (21847968310558).

25400550434450 is a wasteful number, since it uses less digits than its factorization.

25400550434450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37579978 (or 37579973 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 41.

The spelling of 25400550434450 in words is "twenty-five trillion, four hundred billion, five hundred fifty million, four hundred thirty-four thousand, four hundred fifty".