25554135320 has 64 divisors (see below), whose sum is σ = 67976539200. Its totient is φ = 8459297280.

The previous prime is 25554135319. The next prime is 25554135473. The reversal of 25554135320 is 2353145552.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1565411 + ... + 1581650.

It is an arithmetic number, because the mean of its divisors is an integer number (1062133425).

Almost surely, 2^25554135320 is an apocalyptic number.

25554135320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25554135320 is an abundant number, since it is smaller than the sum of its proper divisors (42422403880).

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

25554135320 is a wasteful number, since it uses less digits than its factorization.

25554135320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147108 (or 3147104 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 25554135320 in words is "twenty-five billion, five hundred fifty-four million, one hundred thirty-five thousand, three hundred twenty".