2121762325 has 6 divisors (see below), whose sum is σ = 2630985314. Its totient is φ = 1697409840.

The previous prime is 2121762323. The next prime is 2121762337. The reversal of 2121762325 is 5232671212.

It can be written as a sum of positive squares in 3 ways, for example, as 651576676 + 1470185649 = 25526^2 + 38343^2 .

It is not a de Polignac number, because 2121762325 - 2¹ = 2121762323 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121762323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42435222 + ... + 42435271.

Almost surely, 2^2121762325 is an apocalyptic number.

2121762325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2121762325 is a deficient number, since it is larger than the sum of its proper divisors (509222989).

2121762325 is an equidigital number, since it uses as much as digits as its factorization.

2121762325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84870503 (or 84870498 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 2121762325 is about 46062.5913838985. The cubic root of 2121762325 is about 1284.9875242926.

The spelling of 2121762325 in words is "two billion, one hundred twenty-one million, seven hundred sixty-two thousand, three hundred twenty-five".