25514560420 has 24 divisors (see below), whose sum is σ = 53589252024. Its totient is φ = 10204171776.

The previous prime is 25514560373. The next prime is 25514560439. The reversal of 25514560420 is 2406541552.

It can be written as a sum of positive squares in 4 ways, for example, as 1464133696 + 24050426724 = 38264^2 + 155082^2 .

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 7 ways as a sum of consecutive naturals, for example, 27372 + ... + 227548.

It is an arithmetic number, because the mean of its divisors is an integer number (2232885501).

Almost surely, 2^25514560420 is an apocalyptic number.

25514560420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25514560420 is an abundant number, since it is smaller than the sum of its proper divisors (28074691604).

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

25514560420 is a wasteful number, since it uses less digits than its factorization.

25514560420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206559 (or 206557 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 25514560420 in words is "twenty-five billion, five hundred fourteen million, five hundred sixty thousand, four hundred twenty".