25505050 has 12 divisors (see below), whose sum is σ = 47439486. Its totient is φ = 10202000.

The previous prime is 25505041. The next prime is 25505057. The reversal of 25505050 is 5050552.

It can be written as a sum of positive squares in 3 ways, for example, as 12909649 + 12595401 = 3593^2 + 3549^2 .

25505050 is a modest number, since divided by 5050 gives 2550 as remainder.

It is not an unprimeable number, because it can be changed into a prime (25505057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 255001 + ... + 255100.

Almost surely, 2^25505050 is an apocalyptic number.

25505050 is a deficient number, since it is larger than the sum of its proper divisors (21934436).

25505050 is a wasteful number, since it uses less digits than its factorization.

25505050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510113 (or 510108 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 22.

The square root of 25505050 is about 5050.2524689366. The cubic root of 25505050 is about 294.3576947348.

The spelling of 25505050 in words is "twenty-five million, five hundred five thousand, fifty".