25655178552 has 32 divisors (see below), whose sum is σ = 64299526800. Its totient is φ = 8530182144.

The previous prime is 25655178551. The next prime is 25655178589. The reversal of 25655178552 is 25587155652.

It is a junction number, because it is equal to n+sod(n) for n = 25655178495 and 25655178504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25655178551) 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, 1336777 + ... + 1355832.

Almost surely, 2^25655178552 is an apocalyptic number.

It is an amenable number.

25655178552 is an abundant number, since it is smaller than the sum of its proper divisors (38644348248).

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

25655178552 is a wasteful number, since it uses less digits than its factorization.

25655178552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2693015 (or 2693011 counting only the distinct ones).

The product of its digits is 4200000, while the sum is 51.

The spelling of 25655178552 in words is "twenty-five billion, six hundred fifty-five million, one hundred seventy-eight thousand, five hundred fifty-two".