25410520340 has 96 divisors (see below), whose sum is σ = 56077860384. Its totient is φ = 9661317120.

The previous prime is 25410520339. The next prime is 25410520379. The reversal of 25410520340 is 4302501452.

It is a happy number.

It can be written as a sum of positive squares in 16 ways, for example, as 727596676 + 24682923664 = 26974^2 + 157108^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10078280 + ... + 10080800.

It is an arithmetic number, because the mean of its divisors is an integer number (584144379).

Almost surely, 2^25410520340 is an apocalyptic number.

25410520340 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 25410520340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28038930192).

25410520340 is an abundant number, since it is smaller than the sum of its proper divisors (30667340044).

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

25410520340 is a wasteful number, since it uses less digits than its factorization.

25410520340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 25410520340 in words is "twenty-five billion, four hundred ten million, five hundred twenty thousand, three hundred forty".