2188538425 has 12 divisors (see below), whose sum is σ = 2715738880. Its totient is φ = 1749571920.

The previous prime is 2188538423. The next prime is 2188538431. The reversal of 2188538425 is 5248358812.

It is not a de Polignac number, because 2188538425 - 2¹ = 2188538423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2188538423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4816 + ... + 66334.

Almost surely, 2^2188538425 is an apocalyptic number.

2188538425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2188538425 is a deficient number, since it is larger than the sum of its proper divisors (527200455).

2188538425 is a wasteful number, since it uses less digits than its factorization.

2188538425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62952 (or 62947 counting only the distinct ones).

The product of its digits is 614400, while the sum is 46.

The square root of 2188538425 is about 46781.8172477299. The cubic root of 2188538425 is about 1298.3289030895.

The spelling of 2188538425 in words is "two billion, one hundred eighty-eight million, five hundred thirty-eight thousand, four hundred twenty-five".