155825378568 has 48 divisors (see below), whose sum is σ = 422046038700. Its totient is φ = 51939457920.

The previous prime is 155825378567. The next prime is 155825378581. The reversal of 155825378568 is 865873528551.

It is a happy number.

155825378568 is a `hidden beast` number, since 1 + 558 + 2 + 5 + 3 + 78 + 5 + 6 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 153305137764 + 2520240804 = 391542^2 + 50202^2 .

It is not an unprimeable number, because it can be changed into a prime (155825378567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2447458 + ... + 2510318.

Almost surely, 2^155825378568 is an apocalyptic number.

155825378568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

155825378568 is an abundant number, since it is smaller than the sum of its proper divisors (266220660132).

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

155825378568 is a wasteful number, since it uses less digits than its factorization.

155825378568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97302 (or 97295 counting only the distinct ones).

The product of its digits is 80640000, while the sum is 63.

The spelling of 155825378568 in words is "one hundred fifty-five billion, eight hundred twenty-five million, three hundred seventy-eight thousand, five hundred sixty-eight".