25555000530500 has 96 divisors (see below), whose sum is σ = 63787720389120. Its totient is φ = 8761379433600.

The previous prime is 25555000530473. The next prime is 25555000530541. The reversal of 25555000530500 is 503500055552.

It is a super-2 number, since 2×25555000530500² (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102099506 + ... + 102349494.

It is an arithmetic number, because the mean of its divisors is an integer number (664455420720).

Almost surely, 2^{25555000530500} is an apocalyptic number.

25555000530500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25555000530500 is an abundant number, since it is smaller than the sum of its proper divisors (38232719858620).

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

25555000530500 is a wasteful number, since it uses less digits than its factorization.

25555000530500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279222 (or 279210 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 35.

The spelling of 25555000530500 in words is "twenty-five trillion, five hundred fifty-five billion, five hundred thirty thousand, five hundred".