55825722578 has 8 divisors (see below), whose sum is σ = 88664382972. Its totient is φ = 26270928256.

The previous prime is 55825722509. The next prime is 55825722583. The reversal of 55825722578 is 87522752855.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54115321129 + 1710401449 = 232627^2 + 41357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×55825722578² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 820966475 + ... + 820966542.

Almost surely, 2^55825722578 is an apocalyptic number.

55825722578 is a deficient number, since it is larger than the sum of its proper divisors (32838660394).

55825722578 is a wasteful number, since it uses less digits than its factorization.

55825722578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641933036.

The product of its digits is 15680000, while the sum is 56.

The spelling of 55825722578 in words is "fifty-five billion, eight hundred twenty-five million, seven hundred twenty-two thousand, five hundred seventy-eight".