25545089500 has 48 divisors (see below), whose sum is σ = 63760552128. Its totient is φ = 8758315200.

The previous prime is 25545089443. The next prime is 25545089519. The reversal of 25545089500 is 598054552.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3645799 + ... + 3652798.

It is an arithmetic number, because the mean of its divisors is an integer number (1328344836).

Almost surely, 2^25545089500 is an apocalyptic number.

25545089500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25545089500 is an abundant number, since it is smaller than the sum of its proper divisors (38215462628).

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

25545089500 is a wasteful number, since it uses less digits than its factorization.

25545089500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7298623 (or 7298611 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 25545089500 in words is "twenty-five billion, five hundred forty-five million, eighty-nine thousand, five hundred".