2142204525 has 18 divisors (see below), whose sum is σ = 3836926730. Its totient is φ = 1142508960.

The previous prime is 2142204523. The next prime is 2142204529. The reversal of 2142204525 is 5254022412.

It can be written as a sum of positive squares in 3 ways, for example, as 95004009 + 2047200516 = 9747^2 + 45246^2 .

It is not a de Polignac number, because 2142204525 - 2¹ = 2142204523 is a prime.

It is a super-4 number, since 4×2142204525⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142204523) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4760230 + ... + 4760679.

Almost surely, 2^2142204525 is an apocalyptic number.

2142204525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2142204525 is a deficient number, since it is larger than the sum of its proper divisors (1694722205).

2142204525 is a wasteful number, since it uses less digits than its factorization.

2142204525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520925 (or 9520917 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2142204525 is about 46283.9553733256. The cubic root of 2142204525 is about 1289.1010954174.

Adding to 2142204525 its reverse (5254022412), we get a palindrome (7396226937).

The spelling of 2142204525 in words is "two billion, one hundred forty-two million, two hundred four thousand, five hundred twenty-five".