12025691664 has 160 divisors (see below), whose sum is σ = 36687366144. Its totient is φ = 3323013120.

The previous prime is 12025691653. The next prime is 12025691677. The reversal of 12025691664 is 46619652021.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1484104 + ... + 1492184.

Almost surely, 2^12025691664 is an apocalyptic number.

12025691664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12025691664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18343683072).

12025691664 is an abundant number, since it is smaller than the sum of its proper divisors (24661674480).

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

12025691664 is a wasteful number, since it uses less digits than its factorization.

12025691664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8245 (or 8239 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 12025691664 in words is "twelve billion, twenty-five million, six hundred ninety-one thousand, six hundred sixty-four".