4228656525 has 72 divisors (see below), whose sum is σ = 7841799680. Its totient is φ = 2175984000.

The previous prime is 4228656499. The next prime is 4228656539. The reversal of 4228656525 is 5256568224.

It is a happy number.

4228656525 is a `hidden beast` number, since 4 + 2 + 2 + 86 + 565 + 2 + 5 = 666.

4228656525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4228656525 - 2¹⁷ = 4228525453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3061335 + ... + 3062715.

Almost surely, 2^4228656525 is an apocalyptic number.

4228656525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4228656525 is a deficient number, since it is larger than the sum of its proper divisors (3613143155).

4228656525 is a wasteful number, since it uses less digits than its factorization.

4228656525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867 (or 1859 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 45.

The square root of 4228656525 is about 65028.1210323657. The cubic root of 4228656525 is about 1617.0897968979.

The spelling of 4228656525 in words is "four billion, two hundred twenty-eight million, six hundred fifty-six thousand, five hundred twenty-five".