25945355320 has 16 divisors (see below), whose sum is σ = 58377049560. Its totient is φ = 10378142112.

The previous prime is 25945355311. The next prime is 25945355327. The reversal of 25945355320 is 2355354952.

It is a super-2 number, since 2×25945355320² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25945355327) 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, 324316902 + ... + 324316981.

Almost surely, 2^25945355320 is an apocalyptic number.

25945355320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25945355320 is an abundant number, since it is smaller than the sum of its proper divisors (32431694240).

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

25945355320 is a wasteful number, since it uses less digits than its factorization.

25945355320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648633894 (or 648633890 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 43.

The spelling of 25945355320 in words is "twenty-five billion, nine hundred forty-five million, three hundred fifty-five thousand, three hundred twenty".