940525009 has 2 divisors, whose sum is σ = 940525010. Its totient is φ = 940525008.

The previous prime is 940525007. The next prime is 940525063. The reversal of 940525009 is 900525049.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565250625 + 375274384 = 23775^2 + 19372^2 .

It is a cyclic number.

It is not a de Polignac number, because 940525009 - 2¹ = 940525007 is a prime.

Together with 940525007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (940525007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470262504 + 470262505.

It is an arithmetic number, because the mean of its divisors is an integer number (470262505).

Almost surely, 2^940525009 is an apocalyptic number.

It is an amenable number.

940525009 is a deficient number, since it is larger than the sum of its proper divisors (1).

940525009 is an equidigital number, since it uses as much as digits as its factorization.

940525009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 940525009 is about 30667.9801910723. The cubic root of 940525009 is about 979.7684476537.

The spelling of 940525009 in words is "nine hundred forty million, five hundred twenty-five thousand, nine".