25825421060 has 12 divisors (see below), whose sum is σ = 54233384268. Its totient is φ = 10330168416.

The previous prime is 25825421057. The next prime is 25825421081. The reversal of 25825421060 is 6012452852.

It can be written as a sum of positive squares in 2 ways, for example, as 18022525504 + 7802895556 = 134248^2 + 88334^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25825421060.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645635507 + ... + 645635546.

It is an arithmetic number, because the mean of its divisors is an integer number (4519448689).

Almost surely, 2^25825421060 is an apocalyptic number.

25825421060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25825421060 is an abundant number, since it is smaller than the sum of its proper divisors (28407963208).

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

25825421060 is a wasteful number, since it uses less digits than its factorization.

25825421060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291271062 (or 1291271060 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 25825421060 in words is "twenty-five billion, eight hundred twenty-five million, four hundred twenty-one thousand, sixty".