2125135446 has 128 divisors (see below), whose sum is σ = 5249664000. Its totient is φ = 560079360.

The previous prime is 2125135423. The next prime is 2125135447. The reversal of 2125135446 is 6445315212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125135447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7252876 + ... + 7253168.

It is an arithmetic number, because the mean of its divisors is an integer number (41013000).

Almost surely, 2^2125135446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2125135446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2624832000).

2125135446 is an abundant number, since it is smaller than the sum of its proper divisors (3124528554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2125135446 is a wasteful number, since it uses less digits than its factorization.

2125135446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534.

The product of its digits is 28800, while the sum is 33.

The square root of 2125135446 is about 46099.1913811945. The cubic root of 2125135446 is about 1285.6681100277.

The spelling of 2125135446 in words is "two billion, one hundred twenty-five million, one hundred thirty-five thousand, four hundred forty-six".