2225978657 has 16 divisors (see below), whose sum is σ = 2714849280. Its totient is φ = 1781595648.

The previous prime is 2225978627. The next prime is 2225978659. The reversal of 2225978657 is 7568795222.

It is a de Polignac number, because none of the positive numbers 2^k-2225978657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2225978599 and 2225978608.

It is not an unprimeable number, because it can be changed into a prime (2225978659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58532 + ... + 88757.

It is an arithmetic number, because the mean of its divisors is an integer number (169678080).

Almost surely, 2^2225978657 is an apocalyptic number.

It is an amenable number.

2225978657 is a deficient number, since it is larger than the sum of its proper divisors (488870623).

2225978657 is a wasteful number, since it uses less digits than its factorization.

2225978657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147440.

The product of its digits is 4233600, while the sum is 53.

The square root of 2225978657 is about 47180.2782632744. The cubic root of 2225978657 is about 1305.6907637117.

The spelling of 2225978657 in words is "two billion, two hundred twenty-five million, nine hundred seventy-eight thousand, six hundred fifty-seven".