2721224725 has 12 divisors (see below), whose sum is σ = 3375906820. Its totient is φ = 2175955200.

The previous prime is 2721224717. The next prime is 2721224743. The reversal of 2721224725 is 5274221272.

It can be written as a sum of positive squares in 6 ways, for example, as 454798276 + 2266426449 = 21326^2 + 47607^2 .

It is not a de Polignac number, because 2721224725 - 2³ = 2721224717 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31021 + ... + 80029.

Almost surely, 2^2721224725 is an apocalyptic number.

2721224725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2721224725 is a deficient number, since it is larger than the sum of its proper divisors (654682095).

2721224725 is a wasteful number, since it uses less digits than its factorization.

2721224725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51240 (or 51235 counting only the distinct ones).

The product of its digits is 31360, while the sum is 34.

The square root of 2721224725 is about 52165.3594351654. The cubic root of 2721224725 is about 1396.1158879295.

Adding to 2721224725 its reverse (5274221272), we get a palindrome (7995445997).

The spelling of 2721224725 in words is "two billion, seven hundred twenty-one million, two hundred twenty-four thousand, seven hundred twenty-five".