25595351420 has 12 divisors (see below), whose sum is σ = 53750238024. Its totient is φ = 10238140560.

The previous prime is 25595351401. The next prime is 25595351429. The reversal of 25595351420 is 2415359552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25595351429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639883766 + ... + 639883805.

It is an arithmetic number, because the mean of its divisors is an integer number (4479186502).

Almost surely, 2^25595351420 is an apocalyptic number.

25595351420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25595351420 is an abundant number, since it is smaller than the sum of its proper divisors (28154886604).

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

25595351420 is a wasteful number, since it uses less digits than its factorization.

25595351420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279767580 (or 1279767578 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 25595351420 in words is "twenty-five billion, five hundred ninety-five million, three hundred fifty-one thousand, four hundred twenty".