2125865419 has 4 divisors (see below), whose sum is σ = 2250916344. Its totient is φ = 2000814496.

The previous prime is 2125865359. The next prime is 2125865437. The reversal of 2125865419 is 9145685212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2125865419 - 2¹¹ = 2125863371 is a prime.

It is a super-2 number, since 2×2125865419² = 9038607559400091122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125865219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62525437 + ... + 62525470.

It is an arithmetic number, because the mean of its divisors is an integer number (562729086).

Almost surely, 2^2125865419 is an apocalyptic number.

2125865419 is a deficient number, since it is larger than the sum of its proper divisors (125050925).

2125865419 is a wasteful number, since it uses less digits than its factorization.

2125865419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125050924.

The product of its digits is 172800, while the sum is 43.

The square root of 2125865419 is about 46107.1081179464. The cubic root of 2125865419 is about 1285.8152999512.

The spelling of 2125865419 in words is "two billion, one hundred twenty-five million, eight hundred sixty-five thousand, four hundred nineteen".