425003721 has 4 divisors (see below), whose sum is σ = 566671632. Its totient is φ = 283335812.

The previous prime is 425003699. The next prime is 425003749. The reversal of 425003721 is 127300524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 425003721 - 2²⁶ = 357894857 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 425003691 and 425003700.

It is not an unprimeable number, because it can be changed into a prime (425003771) 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 3 ways as a sum of consecutive naturals, for example, 70833951 + ... + 70833956.

It is an arithmetic number, because the mean of its divisors is an integer number (141667908).

Almost surely, 2^425003721 is an apocalyptic number.

It is an amenable number.

425003721 is a deficient number, since it is larger than the sum of its proper divisors (141667911).

425003721 is a wasteful number, since it uses less digits than its factorization.

425003721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141667910.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 425003721 is about 20615.6183753968. The cubic root of 425003721 is about 751.8494923108.

The spelling of 425003721 in words is "four hundred twenty-five million, three thousand, seven hundred twenty-one".