25766666148 has 96 divisors (see below), whose sum is σ = 64751436288. Its totient is φ = 7946099200.

The previous prime is 25766666089. The next prime is 25766666183. The reversal of 25766666148 is 84166666752.

It is a super-4 number, since 4×25766666148⁴ (a number of 43 digits) contains 4444 as substring.

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, 2854963 + ... + 2863973.

It is an arithmetic number, because the mean of its divisors is an integer number (674494128).

Almost surely, 2^25766666148 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 25766666148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32375718144).

25766666148 is an abundant number, since it is smaller than the sum of its proper divisors (38984770140).

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

25766666148 is a wasteful number, since it uses less digits than its factorization.

25766666148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9273 (or 9271 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 57.

The spelling of 25766666148 in words is "twenty-five billion, seven hundred sixty-six million, six hundred sixty-six thousand, one hundred forty-eight".