5205512412 has 48 divisors (see below), whose sum is σ = 13961152800. Its totient is φ = 1675336320.

The previous prime is 5205512393. The next prime is 5205512413. The reversal of 5205512412 is 2142155025.

5205512412 is a `hidden beast` number, since 520 + 5 + 5 + 124 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5205512413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 827889 + ... + 834152.

It is an arithmetic number, because the mean of its divisors is an integer number (290857350).

Almost surely, 2^5205512412 is an apocalyptic number.

It is an amenable number.

5205512412 is an abundant number, since it is smaller than the sum of its proper divisors (8755640388).

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

5205512412 is a wasteful number, since it uses less digits than its factorization.

5205512412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662083 (or 1662075 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 5205512412 is about 72149.2370853636. The cubic root of 5205512412 is about 1733.0901825428.

Adding to 5205512412 its reverse (2142155025), we get a palindrome (7347667437).

The spelling of 5205512412 in words is "five billion, two hundred five million, five hundred twelve thousand, four hundred twelve".