2978159225 has 24 divisors (see below), whose sum is σ = 3792882240. Its totient is φ = 2318840000.

The previous prime is 2978159221. The next prime is 2978159251. The reversal of 2978159225 is 5229518792.

It is a happy number.

It is not a de Polignac number, because 2978159225 - 2² = 2978159221 is a prime.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2978159221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 138980 + ... + 158970.

It is an arithmetic number, because the mean of its divisors is an integer number (158036760).

Almost surely, 2^2978159225 is an apocalyptic number.

2978159225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2978159225 is a deficient number, since it is larger than the sum of its proper divisors (814723015).

2978159225 is a wasteful number, since it uses less digits than its factorization.

2978159225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20161 (or 20156 counting only the distinct ones).

The product of its digits is 907200, while the sum is 50.

The square root of 2978159225 is about 54572.5134568676. The cubic root of 2978159225 is about 1438.7410590419.

The spelling of 2978159225 in words is "two billion, nine hundred seventy-eight million, one hundred fifty-nine thousand, two hundred twenty-five".