25382128662 has 24 divisors (see below), whose sum is σ = 59994122760. Its totient is φ = 7691554080.

The previous prime is 25382128643. The next prime is 25382128789. The reversal of 25382128662 is 26682128352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64096087 + ... + 64096482.

It is an arithmetic number, because the mean of its divisors is an integer number (2499755115).

Almost surely, 2^25382128662 is an apocalyptic number.

25382128662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25382128662 is an abundant number, since it is smaller than the sum of its proper divisors (34611994098).

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

25382128662 is a wasteful number, since it uses less digits than its factorization.

25382128662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128192588 (or 128192585 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The spelling of 25382128662 in words is "twenty-five billion, three hundred eighty-two million, one hundred twenty-eight thousand, six hundred sixty-two".