1066356225 has 48 divisors (see below), whose sum is σ = 2137035840. Its totient is φ = 517017600.

The previous prime is 1066356223. The next prime is 1066356227. The reversal of 1066356225 is 5226536601.

It is a happy number.

1066356225 is a `hidden beast` number, since 10 + 6 + 63 + 562 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (1066356223) and next prime (1066356227).

It is not a de Polignac number, because 1066356225 - 2¹ = 1066356223 is a prime.

It is a super-2 number, since 2×1066356225² = 2274231197192501250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1066356225.

It is not an unprimeable number, because it can be changed into a prime (1066356223) 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, 64384 + ... + 79233.

It is an arithmetic number, because the mean of its divisors is an integer number (44521580).

Almost surely, 2^1066356225 is an apocalyptic number.

1066356225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066356225 is an abundant number, since it is smaller than the sum of its proper divisors (1070679615).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066356225 is a wasteful number, since it uses less digits than its factorization.

1066356225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143647 (or 143636 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 1066356225 is about 32655.1102432682. The cubic root of 1066356225 is about 1021.6467775831.

The spelling of 1066356225 in words is "one billion, sixty-six million, three hundred fifty-six thousand, two hundred twenty-five".