2389919825 has 6 divisors (see below), whose sum is σ = 2963500614. Its totient is φ = 1911935840.

The previous prime is 2389919821. The next prime is 2389919863. The reversal of 2389919825 is 5289199832.

It can be written as a sum of positive squares in 3 ways, for example, as 792478801 + 1597441024 = 28151^2 + 39968^2 .

It is not a de Polignac number, because 2389919825 - 2² = 2389919821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2389919821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47798372 + ... + 47798421.

It is an arithmetic number, because the mean of its divisors is an integer number (493916769).

Almost surely, 2^2389919825 is an apocalyptic number.

2389919825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2389919825 is a deficient number, since it is larger than the sum of its proper divisors (573580789).

2389919825 is an equidigital number, since it uses as much as digits as its factorization.

2389919825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95596803 (or 95596798 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 56.

The square root of 2389919825 is about 48886.8062466756. The cubic root of 2389919825 is about 1336.9888249533.

The spelling of 2389919825 in words is "two billion, three hundred eighty-nine million, nine hundred nineteen thousand, eight hundred twenty-five".