2505161625 has 16 divisors (see below), whose sum is σ = 4168589568. Its totient is φ = 1336086000.

The previous prime is 2505161611. The next prime is 2505161651. The reversal of 2505161625 is 5261615052.

It is not a de Polignac number, because 2505161625 - 2¹³ = 2505153433 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3339841 + ... + 3340590.

It is an arithmetic number, because the mean of its divisors is an integer number (260536848).

Almost surely, 2^2505161625 is an apocalyptic number.

2505161625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2505161625 is a deficient number, since it is larger than the sum of its proper divisors (1663427943).

2505161625 is an equidigital number, since it uses as much as digits as its factorization.

2505161625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680449 (or 6680439 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 2505161625 is about 50051.5896350955. The cubic root of 2505161625 is about 1358.1422199245.

Adding to 2505161625 its reverse (5261615052), we get a palindrome (7766776677).

The spelling of 2505161625 in words is "two billion, five hundred five million, one hundred sixty-one thousand, six hundred twenty-five".