2505252501 has 6 divisors (see below), whose sum is σ = 3618698070. Its totient is φ = 1670168328.

The previous prime is 2505252473. The next prime is 2505252517. The reversal of 2505252501 is 1052525052.

2505252501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1427706225 + 1077546276 = 37785^2 + 32826^2 .

It is not a de Polignac number, because 2505252501 - 2⁵ = 2505252469 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505252571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139180686 + ... + 139180703.

It is an arithmetic number, because the mean of its divisors is an integer number (603116345).

Almost surely, 2^2505252501 is an apocalyptic number.

It is an amenable number.

2505252501 is a deficient number, since it is larger than the sum of its proper divisors (1113445569).

2505252501 is a wasteful number, since it uses less digits than its factorization.

2505252501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278361395 (or 278361392 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 2505252501 is about 50052.4974501772. The cubic root of 2505252501 is about 1358.1586421570.

Adding to 2505252501 its reverse (1052525052), we get a palindrome (3557777553).

The spelling of 2505252501 in words is "two billion, five hundred five million, two hundred fifty-two thousand, five hundred one".