25884275820 has 192 divisors, whose sum is σ = 82762477056. Its totient is φ = 5988003840.

The previous prime is 25884275789. The next prime is 25884275861. The reversal of 25884275820 is 2857248852.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15526627 + ... + 15528293.

It is an arithmetic number, because the mean of its divisors is an integer number (431054568).

Almost surely, 2^25884275820 is an apocalyptic number.

25884275820 is a gapful number since it is divisible by the number (20) 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 25884275820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41381238528).

25884275820 is an abundant number, since it is smaller than the sum of its proper divisors (56878201236).

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

25884275820 is a wasteful number, since it uses less digits than its factorization.

25884275820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2880 (or 2878 counting only the distinct ones).

The product of its (nonzero) digits is 2867200, while the sum is 51.

The spelling of 25884275820 in words is "twenty-five billion, eight hundred eighty-four million, two hundred seventy-five thousand, eight hundred twenty".