425667660 has 48 divisors (see below), whose sum is σ = 1300223232. Its totient is φ = 103192000.

The previous prime is 425667611. The next prime is 425667667. The reversal of 425667660 is 66766524.

It is not an unprimeable number, because it can be changed into a prime (425667667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321816 + ... + 323135.

It is an arithmetic number, because the mean of its divisors is an integer number (27087984).

Almost surely, 2^425667660 is an apocalyptic number.

It is an amenable number.

425667660 is an abundant number, since it is smaller than the sum of its proper divisors (874555572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425667660 is a wasteful number, since it uses less digits than its factorization.

425667660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644974 (or 644972 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 425667660 is about 20631.7149069097. The cubic root of 425667660 is about 752.2408006380.

The spelling of 425667660 in words is "four hundred twenty-five million, six hundred sixty-seven thousand, six hundred sixty".