25860002020 has 24 divisors (see below), whose sum is σ = 54696700800. Its totient is φ = 10269582432.

The previous prime is 25860001967. The next prime is 25860002027. The reversal of 25860002020 is 2020006852.

It is not an unprimeable number, because it can be changed into a prime (25860002027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4648300 + ... + 4653859.

It is an arithmetic number, because the mean of its divisors is an integer number (2279029200).

Almost surely, 2^25860002020 is an apocalyptic number.

25860002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25860002020 is an abundant number, since it is smaller than the sum of its proper divisors (28836698780).

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

25860002020 is a wasteful number, since it uses less digits than its factorization.

25860002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9302307 (or 9302305 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 25860002020 its reverse (2020006852), we get a palindrome (27880008872).

The spelling of 25860002020 in words is "twenty-five billion, eight hundred sixty million, two thousand, twenty".