711025721 has 6 divisors (see below), whose sum is σ = 827111610. Its totient is φ = 609450576.

The previous prime is 711025691. The next prime is 711025849. The reversal of 711025721 is 127520117.

It can be written as a sum of positive squares in only one way, i.e., 649230400 + 61795321 = 25480^2 + 7861^2 .

It is not a de Polignac number, because 711025721 - 2²² = 706831417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (711025921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7255316 + ... + 7255413.

It is an arithmetic number, because the mean of its divisors is an integer number (137851935).

Almost surely, 2^711025721 is an apocalyptic number.

It is an amenable number.

711025721 is a deficient number, since it is larger than the sum of its proper divisors (116085889).

711025721 is a wasteful number, since it uses less digits than its factorization.

711025721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14510743 (or 14510736 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 711025721 is about 26665.0655540166. The cubic root of 711025721 is about 892.5415384999.

Adding to 711025721 its reverse (127520117), we get a palindrome (838545838).

The spelling of 711025721 in words is "seven hundred eleven million, twenty-five thousand, seven hundred twenty-one".