1825868245 has 4 divisors (see below), whose sum is σ = 2191041900. Its totient is φ = 1460694592.

The previous prime is 1825868243. The next prime is 1825868273. The reversal of 1825868245 is 5428685281.

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 307441156 + 1518427089 = 17534^2 + 38967^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825868245 - 2¹ = 1825868243 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1825868243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182586820 + ... + 182586829.

It is an arithmetic number, because the mean of its divisors is an integer number (547760475).

Almost surely, 2^1825868245 is an apocalyptic number.

It is an amenable number.

1825868245 is a deficient number, since it is larger than the sum of its proper divisors (365173655).

1825868245 is an equidigital number, since it uses as much as digits as its factorization.

1825868245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365173654.

The product of its digits is 1228800, while the sum is 49.

The square root of 1825868245 is about 42730.1795573105. The cubic root of 1825868245 is about 1222.2399601359.

The spelling of 1825868245 in words is "one billion, eight hundred twenty-five million, eight hundred sixty-eight thousand, two hundred forty-five".