1252020166 has 16 divisors (see below), whose sum is σ = 1918209600. Its totient is φ = 612675648.

The previous prime is 1252020151. The next prime is 1252020167. The reversal of 1252020166 is 6610202521.

It is a super-3 number, since 3×1252020166³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1252020166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252020167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28915 + ... + 57793.

It is an arithmetic number, because the mean of its divisors is an integer number (119888100).

Almost surely, 2^1252020166 is an apocalyptic number.

1252020166 is a deficient number, since it is larger than the sum of its proper divisors (666189434).

1252020166 is a wasteful number, since it uses less digits than its factorization.

1252020166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29343.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1252020166 is about 35383.8969871890. The cubic root of 1252020166 is about 1077.7973414390.

Adding to 1252020166 its reverse (6610202521), we get a palindrome (7862222687).

The spelling of 1252020166 in words is "one billion, two hundred fifty-two million, twenty thousand, one hundred sixty-six".