2261557625 has 8 divisors (see below), whose sum is σ = 2822424072. Its totient is φ = 1809246000.

The previous prime is 2261557621. The next prime is 2261557633. The reversal of 2261557625 is 5267551622.

It can be written as a sum of positive squares in 4 ways, for example, as 318158569 + 1943399056 = 17837^2 + 44084^2 .

It is not a de Polignac number, because 2261557625 - 2² = 2261557621 is a prime.

It is a super-2 number, since 2×2261557625² = 10229285782391281250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261557621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9046106 + ... + 9046355.

It is an arithmetic number, because the mean of its divisors is an integer number (352803009).

Almost surely, 2^2261557625 is an apocalyptic number.

2261557625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2261557625 is a deficient number, since it is larger than the sum of its proper divisors (560866447).

2261557625 is an equidigital number, since it uses as much as digits as its factorization.

2261557625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18092476 (or 18092466 counting only the distinct ones).

The product of its digits is 252000, while the sum is 41.

The square root of 2261557625 is about 47555.8369183006. The cubic root of 2261557625 is about 1312.6105364200.

The spelling of 2261557625 in words is "two billion, two hundred sixty-one million, five hundred fifty-seven thousand, six hundred twenty-five".