1066613625 has 144 divisors (see below), whose sum is σ = 2441387520. Its totient is φ = 443016000.

The previous prime is 1066613579. The next prime is 1066613687. The reversal of 1066613625 is 5263166601.

It is not a de Polignac number, because 1066613625 - 2⁸ = 1066613369 is a prime.

It is a super-2 number, since 2×1066613625² = 2275329250071281250, 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 1066613625.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 605496 + ... + 607254.

It is an arithmetic number, because the mean of its divisors is an integer number (16954080).

Almost surely, 2^1066613625 is an apocalyptic number.

1066613625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1066613625 is an abundant number, since it is smaller than the sum of its proper divisors (1374773895).

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

1066613625 is a wasteful number, since it uses less digits than its factorization.

1066613625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805 (or 1785 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1066613625 is about 32659.0511956487. The cubic root of 1066613625 is about 1021.7289736067.

The spelling of 1066613625 in words is "one billion, sixty-six million, six hundred thirteen thousand, six hundred twenty-five".