2261605325 has 24 divisors (see below), whose sum is σ = 3207211392. Its totient is φ = 1549753920.

The previous prime is 2261605309. The next prime is 2261605351. The reversal of 2261605325 is 5235061622.

It is not a de Polignac number, because 2261605325 - 2⁴ = 2261605309 is a prime.

It is a super-2 number, since 2×2261605325² = 10229717292136711250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2261605291 and 2261605300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 319727 + ... + 326723.

It is an arithmetic number, because the mean of its divisors is an integer number (133633808).

Almost surely, 2^2261605325 is an apocalyptic number.

2261605325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2261605325 is a deficient number, since it is larger than the sum of its proper divisors (945606067).

2261605325 is a wasteful number, since it uses less digits than its factorization.

2261605325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8861 (or 8856 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 2261605325 is about 47556.3384313805. The cubic root of 2261605325 is about 1312.6197647326.

Adding to 2261605325 its reverse (5235061622), we get a palindrome (7496666947).

The spelling of 2261605325 in words is "two billion, two hundred sixty-one million, six hundred five thousand, three hundred twenty-five".