2251393605 has 12 divisors (see below), whose sum is σ = 3902415660. Its totient is φ = 1200743232.

The previous prime is 2251393603. The next prime is 2251393607. The reversal of 2251393605 is 5063931522.

It is an interprime number because it is at equal distance from previous prime (2251393603) and next prime (2251393607).

It can be written as a sum of positive squares in 2 ways, for example, as 1433833956 + 817559649 = 37866^2 + 28593^2 .

It is not a de Polignac number, because 2251393605 - 2¹ = 2251393603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2251393605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251393603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25015440 + ... + 25015529.

It is an arithmetic number, because the mean of its divisors is an integer number (325201305).

Almost surely, 2^2251393605 is an apocalyptic number.

It is an amenable number.

2251393605 is a deficient number, since it is larger than the sum of its proper divisors (1651022055).

2251393605 is a wasteful number, since it uses less digits than its factorization.

2251393605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50030980 (or 50030977 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 36.

The square root of 2251393605 is about 47448.8525151030. The cubic root of 2251393605 is about 1310.6411804023.

The spelling of 2251393605 in words is "two billion, two hundred fifty-one million, three hundred ninety-three thousand, six hundred five".