25476976778893 has 16 divisors (see below), whose sum is σ = 25644375904896. Its totient is φ = 25309759818240.

The previous prime is 25476976778867. The next prime is 25476976778923. The reversal of 25476976778893 is 39887767967452.

It is a cyclic number.

It is not a de Polignac number, because 25476976778893 - 2³⁷ = 25339537825421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25476976778833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4005181033 + ... + 4005187393.

It is an arithmetic number, because the mean of its divisors is an integer number (1602773494056).

Almost surely, 2^{25476976778893} is an apocalyptic number.

It is an amenable number.

25476976778893 is a deficient number, since it is larger than the sum of its proper divisors (167399126003).

25476976778893 is a wasteful number, since it uses less digits than its factorization.

25476976778893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16644.

The product of its digits is 53770106880, while the sum is 88.

The spelling of 25476976778893 in words is "twenty-five trillion, four hundred seventy-six billion, nine hundred seventy-six million, seven hundred seventy-eight thousand, eight hundred ninety-three".