425491988 has 24 divisors (see below), whose sum is σ = 769461504. Its totient is φ = 205660800.

The previous prime is 425491981. The next prime is 425491991. The reversal of 425491988 is 889194524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425491981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219383 + ... + 221313.

It is an arithmetic number, because the mean of its divisors is an integer number (32060896).

Almost surely, 2^425491988 is an apocalyptic number.

It is an amenable number.

425491988 is a deficient number, since it is larger than the sum of its proper divisors (343969516).

425491988 is a wasteful number, since it uses less digits than its factorization.

425491988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743 (or 3741 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 425491988 is about 20627.4571384841. The cubic root of 425491988 is about 752.1373037542.

The spelling of 425491988 in words is "four hundred twenty-five million, four hundred ninety-one thousand, nine hundred eighty-eight".