7412251805 has 24 divisors (see below), whose sum is σ = 10350683352. Its totient is φ = 5080828032.

The previous prime is 7412251801. The next prime is 7412251829. The reversal of 7412251805 is 5081522147.

It can be written as a sum of positive squares in 4 ways, for example, as 1884775396 + 5527476409 = 43414^2 + 74347^2 .

It is not a de Polignac number, because 7412251805 - 2² = 7412251801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7412251801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1205519 + ... + 1211651.

It is an arithmetic number, because the mean of its divisors is an integer number (431278473).

Almost surely, 2^7412251805 is an apocalyptic number.

It is an amenable number.

7412251805 is a deficient number, since it is larger than the sum of its proper divisors (2938431547).

7412251805 is a wasteful number, since it uses less digits than its factorization.

7412251805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11085 (or 11078 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 7412251805 is about 86094.4353892863. The cubic root of 7412251805 is about 1949.7700193381.

The spelling of 7412251805 in words is "seven billion, four hundred twelve million, two hundred fifty-one thousand, eight hundred five".