425667135816 has 192 divisors, whose sum is σ = 1307863065600. Its totient is φ = 123987096576.

The previous prime is 425667135809. The next prime is 425667135821. The reversal of 425667135816 is 618531766524.

It is a happy number.

425667135816 is a `hidden beast` number, since 4 + 2 + 56 + 6 + 7 + 1 + 3 + 581 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25476121 + ... + 25492823.

It is an arithmetic number, because the mean of its divisors is an integer number (6811786800).

Almost surely, 2^425667135816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425667135816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653931532800).

425667135816 is an abundant number, since it is smaller than the sum of its proper divisors (882195929784).

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

425667135816 is a wasteful number, since it uses less digits than its factorization.

425667135816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18180 (or 18173 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 425667135816 in words is "four hundred twenty-five billion, six hundred sixty-seven million, one hundred thirty-five thousand, eight hundred sixteen".