2125678855 has 8 divisors (see below), whose sum is σ = 2577112272. Its totient is φ = 1683011328.

The previous prime is 2125678787. The next prime is 2125678901. The reversal of 2125678855 is 5588765212.

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

It is a cyclic number.

It is not a de Polignac number, because 2125678855 - 2¹³ = 2125670663 is a prime.

It is a super-2 number, since 2×2125678855² = 9037021189188222050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2125678799 and 2125678808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2190937 + ... + 2191906.

It is an arithmetic number, because the mean of its divisors is an integer number (322139034).

Almost surely, 2^2125678855 is an apocalyptic number.

2125678855 is a deficient number, since it is larger than the sum of its proper divisors (451433417).

2125678855 is an equidigital number, since it uses as much as digits as its factorization.

2125678855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4382945.

The product of its digits is 1344000, while the sum is 49.

The square root of 2125678855 is about 46105.0849147900. The cubic root of 2125678855 is about 1285.7776848602. Note that the first 3 decimals are identical.

The spelling of 2125678855 in words is "two billion, one hundred twenty-five million, six hundred seventy-eight thousand, eight hundred fifty-five".