2125630420 has 24 divisors (see below), whose sum is σ = 4464772200. Its totient is φ = 850071552.

The previous prime is 2125630391. The next prime is 2125630421. The reversal of 2125630420 is 240365212.

It can be written as a sum of positive squares in 4 ways, for example, as 258180624 + 1867449796 = 16068^2 + 43214^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2125630421) 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, 125836 + ... + 141724.

It is an arithmetic number, because the mean of its divisors is an integer number (186032175).

Almost surely, 2^2125630420 is an apocalyptic number.

2125630420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2125630420 is an abundant number, since it is smaller than the sum of its proper divisors (2339141780).

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

2125630420 is a wasteful number, since it uses less digits than its factorization.

2125630420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22587 (or 22585 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2125630420 is about 46104.5596443562. The cubic root of 2125630420 is about 1285.7679190208.

Adding to 2125630420 its reverse (240365212), we get a palindrome (2365995632).

The spelling of 2125630420 in words is "two billion, one hundred twenty-five million, six hundred thirty thousand, four hundred twenty".