2251365012 has 72 divisors (see below), whose sum is σ = 6489251496. Its totient is φ = 651976704.

The previous prime is 2251365007. The next prime is 2251365019. The reversal of 2251365012 is 2105631522.

It is a happy number.

2251365012 is a `hidden beast` number, since 2 + 2 + 5 + 1 + 3 + 650 + 1 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 786465936 + 1464899076 = 28044^2 + 38274^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251365019) 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, 133533 + ... + 149444.

It is an arithmetic number, because the mean of its divisors is an integer number (90128493).

Almost surely, 2^2251365012 is an apocalyptic number.

It is an amenable number.

2251365012 is an abundant number, since it is smaller than the sum of its proper divisors (4237886484).

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

2251365012 is a wasteful number, since it uses less digits than its factorization.

2251365012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283017 (or 283012 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 2251365012 is about 47448.5512107588. The cubic root of 2251365012 is about 1310.6356319393.

Adding to 2251365012 its reverse (2105631522), we get a palindrome (4356996534).

The spelling of 2251365012 in words is "two billion, two hundred fifty-one million, three hundred sixty-five thousand, twelve".