2505550542 has 64 divisors (see below), whose sum is σ = 5911501824. Its totient is φ = 699376640.

The previous prime is 2505550529. The next prime is 2505550543. The reversal of 2505550542 is 2450555052.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505550543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28978 + ... + 76490.

It is an arithmetic number, because the mean of its divisors is an integer number (92367216).

Almost surely, 2^2505550542 is an apocalyptic number.

2505550542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2505550542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2955750912).

2505550542 is an abundant number, since it is smaller than the sum of its proper divisors (3405951282).

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

2505550542 is a wasteful number, since it uses less digits than its factorization.

2505550542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47593.

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 2505550542 is about 50055.4746456369. The cubic root of 2505550542 is about 1358.2124984594.

The spelling of 2505550542 in words is "two billion, five hundred five million, five hundred fifty thousand, five hundred forty-two".