2125256217 has 8 divisors (see below), whose sum is σ = 3238485696. Its totient is φ = 1214432112.

The previous prime is 2125256179. The next prime is 2125256219. The reversal of 2125256217 is 7126525212.

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

It is not a de Polignac number, because 2125256217 - 2¹⁸ = 2124994073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2125256219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50601318 + ... + 50601359.

It is an arithmetic number, because the mean of its divisors is an integer number (404810712).

Almost surely, 2^2125256217 is an apocalyptic number.

It is an amenable number.

2125256217 is a deficient number, since it is larger than the sum of its proper divisors (1113229479).

2125256217 is a wasteful number, since it uses less digits than its factorization.

2125256217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101202687.

The product of its digits is 16800, while the sum is 33.

The square root of 2125256217 is about 46100.5012662552. The cubic root of 2125256217 is about 1285.6924643157.

The spelling of 2125256217 in words is "two billion, one hundred twenty-five million, two hundred fifty-six thousand, two hundred seventeen".