2125694215 has 12 divisors (see below), whose sum is σ = 2621646216. Its totient is φ = 1654589088.

The previous prime is 2125694213. The next prime is 2125694231. The reversal of 2125694215 is 5124965212.

It is not a de Polignac number, because 2125694215 - 2¹ = 2125694213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125694213) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 148429 + ... + 162118.

It is an arithmetic number, because the mean of its divisors is an integer number (218470518).

Almost surely, 2^2125694215 is an apocalyptic number.

2125694215 is a deficient number, since it is larger than the sum of its proper divisors (495952001).

2125694215 is an equidigital number, since it uses as much as digits as its factorization.

2125694215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310626 (or 310589 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 2125694215 is about 46105.2514904756. The cubic root of 2125694215 is about 1285.7807818312.

The spelling of 2125694215 in words is "two billion, one hundred twenty-five million, six hundred ninety-four thousand, two hundred fifteen".