925829721 has 6 divisors (see below), whose sum is σ = 1337309610. Its totient is φ = 617219808.

The previous prime is 925829719. The next prime is 925829743. The reversal of 925829721 is 127928529.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 523265625 + 402564096 = 22875^2 + 20064^2 .

It is not a de Polignac number, because 925829721 - 2¹ = 925829719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (925829761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51434976 + ... + 51434993.

It is an arithmetic number, because the mean of its divisors is an integer number (222884935).

Almost surely, 2^925829721 is an apocalyptic number.

It is an amenable number.

925829721 is a deficient number, since it is larger than the sum of its proper divisors (411479889).

925829721 is a wasteful number, since it uses less digits than its factorization.

925829721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102869975 (or 102869972 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 925829721 is about 30427.4501232029. The cubic root of 925829721 is about 974.6388216459.

The spelling of 925829721 in words is "nine hundred twenty-five million, eight hundred twenty-nine thousand, seven hundred twenty-one".