423018725 has 6 divisors (see below), whose sum is σ = 524543250. Its totient is φ = 338414960.

The previous prime is 423018709. The next prime is 423018727. The reversal of 423018725 is 527810324.

It can be written as a sum of positive squares in 3 ways, for example, as 113188321 + 309830404 = 10639^2 + 17602^2 .

It is not a de Polignac number, because 423018725 - 2⁴ = 423018709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423018691 and 423018700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423018727) 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, 8460350 + ... + 8460399.

It is an arithmetic number, because the mean of its divisors is an integer number (87423875).

Almost surely, 2^423018725 is an apocalyptic number.

It is an amenable number.

423018725 is a deficient number, since it is larger than the sum of its proper divisors (101524525).

423018725 is a wasteful number, since it uses less digits than its factorization.

423018725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16920759 (or 16920754 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 423018725 is about 20567.4190164931. The cubic root of 423018725 is about 750.6771514003.

The spelling of 423018725 in words is "four hundred twenty-three million, eighteen thousand, seven hundred twenty-five".