2125656515 has 8 divisors (see below), whose sum is σ = 2633071488. Its totient is φ = 1645669440.

The previous prime is 2125656473. The next prime is 2125656541. The reversal of 2125656515 is 5156565212.

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

It is not a de Polignac number, because 2125656515 - 2¹⁰ = 2125655491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 6856802 + ... + 6857111.

It is an arithmetic number, because the mean of its divisors is an integer number (329133936).

Almost surely, 2^2125656515 is an apocalyptic number.

2125656515 is a deficient number, since it is larger than the sum of its proper divisors (507414973).

2125656515 is a wasteful number, since it uses less digits than its factorization.

2125656515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13713949.

The product of its digits is 90000, while the sum is 38.

The square root of 2125656515 is about 46104.8426415274. The cubic root of 2125656515 is about 1285.7731805150.

The spelling of 2125656515 in words is "two billion, one hundred twenty-five million, six hundred fifty-six thousand, five hundred fifteen".