1825249645 has 4 divisors (see below), whose sum is σ = 2190299580. Its totient is φ = 1460199712.

The previous prime is 1825249619. The next prime is 1825249703. The reversal of 1825249645 is 5469425281.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 706815396 + 1118434249 = 26586^2 + 33443^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825249645 - 2⁹ = 1825249133 is a prime.

It is a super-3 number, since 3×1825249645³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1825249595 and 1825249604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182524960 + ... + 182524969.

It is an arithmetic number, because the mean of its divisors is an integer number (547574895).

Almost surely, 2^1825249645 is an apocalyptic number.

It is an amenable number.

1825249645 is a deficient number, since it is larger than the sum of its proper divisors (365049935).

1825249645 is an equidigital number, since it uses as much as digits as its factorization.

1825249645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365049934.

The product of its digits is 691200, while the sum is 46.

The square root of 1825249645 is about 42722.9405003916. The cubic root of 1825249645 is about 1222.1019138405.

The spelling of 1825249645 in words is "one billion, eight hundred twenty-five million, two hundred forty-nine thousand, six hundred forty-five".