656216023225 has 48 divisors (see below), whose sum is σ = 946102501120. Its totient is φ = 442176019200.

The previous prime is 656216023223. The next prime is 656216023247. The reversal of 656216023225 is 522320612656.

It is not a de Polignac number, because 656216023225 - 2¹ = 656216023223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656216023223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11318611 + ... + 11376439.

Almost surely, 2^656216023225 is an apocalyptic number.

It is an amenable number.

656216023225 is a deficient number, since it is larger than the sum of its proper divisors (289886477895).

656216023225 is a wasteful number, since it uses less digits than its factorization.

656216023225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58970 (or 58965 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 656216023225 in words is "six hundred fifty-six billion, two hundred sixteen million, twenty-three thousand, two hundred twenty-five".