25871429860 has 12 divisors (see below), whose sum is σ = 54330002748. Its totient is φ = 10348571936.

The previous prime is 25871429833. The next prime is 25871429867. The reversal of 25871429860 is 6892417852.

It can be written as a sum of positive squares in 2 ways, for example, as 8053985536 + 17817444324 = 89744^2 + 133482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25871429798 and 25871429807.

It is not an unprimeable number, because it can be changed into a prime (25871429867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646785727 + ... + 646785766.

It is an arithmetic number, because the mean of its divisors is an integer number (4527500229).

Almost surely, 2^25871429860 is an apocalyptic number.

25871429860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25871429860 is an abundant number, since it is smaller than the sum of its proper divisors (28458572888).

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

25871429860 is a wasteful number, since it uses less digits than its factorization.

25871429860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293571502 (or 1293571500 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 25871429860 in words is "twenty-five billion, eight hundred seventy-one million, four hundred twenty-nine thousand, eight hundred sixty".