425381791 has 4 divisors (see below), whose sum is σ = 426601000. Its totient is φ = 424162584.

The previous prime is 425381777. The next prime is 425381807. The reversal of 425381791 is 197183524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425381791 is a prime.

It is a super-2 number, since 2×425381791² = 361899336228735362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425381771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609081 + ... + 609778.

It is an arithmetic number, because the mean of its divisors is an integer number (106650250).

Almost surely, 2^425381791 is an apocalyptic number.

425381791 is a deficient number, since it is larger than the sum of its proper divisors (1219209).

425381791 is a wasteful number, since it uses less digits than its factorization.

425381791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219208.

The product of its digits is 60480, while the sum is 40.

The square root of 425381791 is about 20624.7858413124. The cubic root of 425381791 is about 752.0723668238.

The spelling of 425381791 in words is "four hundred twenty-five million, three hundred eighty-one thousand, seven hundred ninety-one".