25561406054 has 16 divisors (see below), whose sum is σ = 38499259392. Its totient is φ = 12728348808.

The previous prime is 25561406033. The next prime is 25561406083. The reversal of 25561406054 is 45060416552.

It is a junction number, because it is equal to n+sod(n) for n = 25561405999 and 25561406017.

It is a congruent number.

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, 2879627 + ... + 2888489.

It is an arithmetic number, because the mean of its divisors is an integer number (2406203712).

Almost surely, 2^25561406054 is an apocalyptic number.

25561406054 is a deficient number, since it is larger than the sum of its proper divisors (12937853338).

25561406054 is a wasteful number, since it uses less digits than its factorization.

25561406054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14611.

The product of its (nonzero) digits is 144000, while the sum is 38.

The spelling of 25561406054 in words is "twenty-five billion, five hundred sixty-one million, four hundred six thousand, fifty-four".