2251205272 has 32 divisors (see below), whose sum is σ = 4596390000. Its totient is φ = 1029587328.

The previous prime is 2251205267. The next prime is 2251205321. The reversal of 2251205272 is 2725021522.

It is a self number, because there is not a number n which added to its sum of digits gives 2251205272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250947 + ... + 259762.

Almost surely, 2^2251205272 is an apocalyptic number.

It is an amenable number.

2251205272 is an abundant number, since it is smaller than the sum of its proper divisors (2345184728).

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

2251205272 is a wasteful number, since it uses less digits than its factorization.

2251205272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510763 (or 510759 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 2251205272 is about 47446.8678839816. The cubic root of 2251205272 is about 1310.6046335766.

Adding to 2251205272 its reverse (2725021522), we get a palindrome (4976226794).

The spelling of 2251205272 in words is "two billion, two hundred fifty-one million, two hundred five thousand, two hundred seventy-two".