2164252025 has 18 divisors (see below), whose sum is σ = 2905994250. Its totient is φ = 1598213760.

The previous prime is 2164252021. The next prime is 2164252037. The reversal of 2164252025 is 5202524612.

It can be written as a sum of positive squares in 9 ways, for example, as 644499769 + 1519752256 = 25387^2 + 38984^2 .

It is not a de Polignac number, because 2164252025 - 2² = 2164252021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2164252021) 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, 251900 + ... + 260349.

It is an arithmetic number, because the mean of its divisors is an integer number (161444125).

Almost surely, 2^2164252025 is an apocalyptic number.

2164252025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2164252025 is a deficient number, since it is larger than the sum of its proper divisors (741742225).

2164252025 is a wasteful number, since it uses less digits than its factorization.

2164252025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512285 (or 512267 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2164252025 is about 46521.5221698517. The cubic root of 2164252025 is about 1293.5084719528.

Adding to 2164252025 its reverse (5202524612), we get a palindrome (7366776637).

The spelling of 2164252025 in words is "two billion, one hundred sixty-four million, two hundred fifty-two thousand, twenty-five".