2125581619 has 8 divisors (see below), whose sum is σ = 2507598848. Its totient is φ = 1763155080.

The previous prime is 2125581617. The next prime is 2125581629. The reversal of 2125581619 is 9161855212.

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 2125581619 - 2¹ = 2125581617 is a prime.

It is a super-2 number, since 2×2125581619² = 9036194438061322322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125581617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4897437 + ... + 4897870.

It is an arithmetic number, because the mean of its divisors is an integer number (313449856).

Almost surely, 2^2125581619 is an apocalyptic number.

2125581619 is a deficient number, since it is larger than the sum of its proper divisors (382017229).

2125581619 is an equidigital number, since it uses as much as digits as its factorization.

2125581619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9795345.

The product of its digits is 43200, while the sum is 40.

The square root of 2125581619 is about 46104.0303986539. The cubic root of 2125581619 is about 1285.7580792355.

The spelling of 2125581619 in words is "two billion, one hundred twenty-five million, five hundred eighty-one thousand, six hundred nineteen".