25566756078 has 16 divisors (see below), whose sum is σ = 51135955920. Its totient is φ = 8521844736.

The previous prime is 25566756073. The next prime is 25566756101. The reversal of 25566756078 is 87065766552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25566756073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52078 + ... + 232046.

It is an arithmetic number, because the mean of its divisors is an integer number (3195997245).

Almost surely, 2^25566756078 is an apocalyptic number.

25566756078 is an abundant number, since it is smaller than the sum of its proper divisors (25569199842).

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

25566756078 is a wasteful number, since it uses less digits than its factorization.

25566756078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203651.

The product of its (nonzero) digits is 21168000, while the sum is 57.

The spelling of 25566756078 in words is "twenty-five billion, five hundred sixty-six million, seven hundred fifty-six thousand, seventy-eight".