25620379876 has 48 divisors (see below), whose sum is σ = 55264398336. Its totient is φ = 10120466304.

The previous prime is 25620379871. The next prime is 25620379879. The reversal of 25620379876 is 67897302652.

It is not an unprimeable number, because it can be changed into a prime (25620379871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194445 + ... + 298411.

It is an arithmetic number, because the mean of its divisors is an integer number (1151341632).

Almost surely, 2^25620379876 is an apocalyptic number.

25620379876 is a gapful number since it is divisible by the number (26) 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 25620379876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27632199168).

25620379876 is an abundant number, since it is smaller than the sum of its proper divisors (29644018460).

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

25620379876 is a wasteful number, since it uses less digits than its factorization.

25620379876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104668 (or 104666 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 25620379876 in words is "twenty-five billion, six hundred twenty million, three hundred seventy-nine thousand, eight hundred seventy-six".