2506250121 has 4 divisors (see below), whose sum is σ = 3341666832. Its totient is φ = 1670833412.

The previous prime is 2506250113. The next prime is 2506250129. The reversal of 2506250121 is 1210526052.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2506250113) and next prime (2506250129).

It is a cyclic number.

It is not a de Polignac number, because 2506250121 - 2³ = 2506250113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2506250091 and 2506250100.

It is not an unprimeable number, because it can be changed into a prime (2506250129) 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, 417708351 + ... + 417708356.

It is an arithmetic number, because the mean of its divisors is an integer number (835416708).

Almost surely, 2^2506250121 is an apocalyptic number.

It is an amenable number.

2506250121 is a deficient number, since it is larger than the sum of its proper divisors (835416711).

2506250121 is an equidigital number, since it uses as much as digits as its factorization.

2506250121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835416710.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2506250121 is about 50062.4621947423. The cubic root of 2506250121 is about 1358.3388962983.

Adding to 2506250121 its reverse (1210526052), we get a palindrome (3716776173).

The spelling of 2506250121 in words is "two billion, five hundred six million, two hundred fifty thousand, one hundred twenty-one".