1825716289 has 4 divisors (see below), whose sum is σ = 1921806640. Its totient is φ = 1729625940.

The previous prime is 1825716259. The next prime is 1825716293. The reversal of 1825716289 is 9826175281.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1825716289 - 2⁷ = 1825716161 is a prime.

It is a super-4 number, since 4×1825716289⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1825716209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48045147 + ... + 48045184.

It is an arithmetic number, because the mean of its divisors is an integer number (480451660).

Almost surely, 2^1825716289 is an apocalyptic number.

1825716289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1825716289 is a deficient number, since it is larger than the sum of its proper divisors (96090351).

1825716289 is an equidigital number, since it uses as much as digits as its factorization.

1825716289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96090350.

The product of its digits is 483840, while the sum is 49.

The square root of 1825716289 is about 42728.4014327707. The cubic root of 1825716289 is about 1222.2060526422.

The spelling of 1825716289 in words is "one billion, eight hundred twenty-five million, seven hundred sixteen thousand, two hundred eighty-nine".