25307483820 has 48 divisors (see below), whose sum is σ = 71113176288. Its totient is φ = 6724641280.

The previous prime is 25307483807. The next prime is 25307483821. The reversal of 25307483820 is 2838470352.

It is not an unprimeable number, because it can be changed into a prime (25307483821) 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, 733659 + ... + 767378.

It is an arithmetic number, because the mean of its divisors is an integer number (1481524506).

Almost surely, 2^25307483820 is an apocalyptic number.

25307483820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25307483820 is an abundant number, since it is smaller than the sum of its proper divisors (45805692468).

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

25307483820 is a wasteful number, since it uses less digits than its factorization.

25307483820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501330 (or 1501328 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The spelling of 25307483820 in words is "twenty-five billion, three hundred seven million, four hundred eighty-three thousand, eight hundred twenty".