45125505520 has 20 divisors (see below), whose sum is σ = 104916800520. Its totient is φ = 18050202176.

The previous prime is 45125505511. The next prime is 45125505527. The reversal of 45125505520 is 2550552154.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×45125505520² (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 (45125505527) 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, 282034330 + ... + 282034489.

It is an arithmetic number, because the mean of its divisors is an integer number (5245840026).

Almost surely, 2^45125505520 is an apocalyptic number.

45125505520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45125505520 is an abundant number, since it is smaller than the sum of its proper divisors (59791295000).

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

45125505520 is a wasteful number, since it uses less digits than its factorization.

45125505520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564068832 (or 564068826 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 34.

The spelling of 45125505520 in words is "forty-five billion, one hundred twenty-five million, five hundred five thousand, five hundred twenty".