25520543052 has 48 divisors (see below), whose sum is σ = 59754412032. Its totient is φ = 8477395200.

The previous prime is 25520543047. The next prime is 25520543053. The reversal of 25520543052 is 25034502552.

It is not an unprimeable number, because it can be changed into a prime (25520543053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6845613 + ... + 6849339.

It is an arithmetic number, because the mean of its divisors is an integer number (1244883584).

Almost surely, 2^25520543052 is an apocalyptic number.

It is an amenable number.

25520543052 is an abundant number, since it is smaller than the sum of its proper divisors (34233868980).

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

25520543052 is a wasteful number, since it uses less digits than its factorization.

25520543052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558 (or 5556 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 33.

The spelling of 25520543052 in words is "twenty-five billion, five hundred twenty million, five hundred forty-three thousand, fifty-two".