2621304225 has 18 divisors (see below), whose sum is σ = 4695047526. Its totient is φ = 1398028800.

The previous prime is 2621304211. The next prime is 2621304253. The reversal of 2621304225 is 5224031262.

It is a happy number.

2621304225 is a `hidden beast` number, since 2 + 621 + 30 + 4 + 2 + 2 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 101364624 + 2519939601 = 10068^2 + 50199^2 .

It is not a de Polignac number, because 2621304225 - 2⁸ = 2621303969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5824896 + ... + 5825345.

Almost surely, 2^2621304225 is an apocalyptic number.

2621304225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2621304225 is a deficient number, since it is larger than the sum of its proper divisors (2073743301).

2621304225 is a wasteful number, since it uses less digits than its factorization.

2621304225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11650257 (or 11650249 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 2621304225 is about 51198.6740550964. The cubic root of 2621304225 is about 1378.8143960035.

Adding to 2621304225 its reverse (5224031262), we get a palindrome (7845335487).

The spelling of 2621304225 in words is "two billion, six hundred twenty-one million, three hundred four thousand, two hundred twenty-five".