2125531015 has 8 divisors (see below), whose sum is σ = 2550916368. Its totient is φ = 1700238720.

The previous prime is 2125531003. The next prime is 2125531033. The reversal of 2125531015 is 5101355212.

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

It is not a de Polignac number, because 2125531015 - 2⁹ = 2125530503 is a prime.

It is a Duffinian number.

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, 45439 + ... + 79471.

It is an arithmetic number, because the mean of its divisors is an integer number (318864546).

Almost surely, 2^2125531015 is an apocalyptic number.

2125531015 is a deficient number, since it is larger than the sum of its proper divisors (425385353).

2125531015 is a wasteful number, since it uses less digits than its factorization.

2125531015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46529.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 2125531015 is about 46103.4815930424. The cubic root of 2125531015 is about 1285.7478757509.

Adding to 2125531015 its reverse (5101355212), we get a palindrome (7226886227).

The spelling of 2125531015 in words is "two billion, one hundred twenty-five million, five hundred thirty-one thousand, fifteen".