2217651425 has 48 divisors (see below), whose sum is σ = 3127900992. Its totient is φ = 1545350400.

The previous prime is 2217651407. The next prime is 2217651439. The reversal of 2217651425 is 5241567122.

It is not a de Polignac number, because 2217651425 - 2¹⁰ = 2217650401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 680099 + ... + 683351.

It is an arithmetic number, because the mean of its divisors is an integer number (65164604).

Almost surely, 2^2217651425 is an apocalyptic number.

2217651425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2217651425 is a deficient number, since it is larger than the sum of its proper divisors (910249567).

2217651425 is a wasteful number, since it uses less digits than its factorization.

2217651425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378 (or 3373 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 2217651425 is about 47091.9464983133. The cubic root of 2217651425 is about 1304.0605629546.

The spelling of 2217651425 in words is "two billion, two hundred seventeen million, six hundred fifty-one thousand, four hundred twenty-five".