2125891037 has 4 divisors (see below), whose sum is σ = 2127322176. Its totient is φ = 2124459900.

The previous prime is 2125890971. The next prime is 2125891049. The reversal of 2125891037 is 7301985212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2125891037 - 2²⁴ = 2109113821 is a prime.

It is a super-3 number, since 3×2125891037³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125891067) 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, 713339 + ... + 716312.

It is an arithmetic number, because the mean of its divisors is an integer number (531830544).

Almost surely, 2^2125891037 is an apocalyptic number.

It is an amenable number.

2125891037 is a deficient number, since it is larger than the sum of its proper divisors (1431139).

2125891037 is a wasteful number, since it uses less digits than its factorization.

2125891037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431138.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 2125891037 is about 46107.3859267688. The cubic root of 2125891037 is about 1285.8204648883.

The spelling of 2125891037 in words is "two billion, one hundred twenty-five million, eight hundred ninety-one thousand, thirty-seven".