2125242251 has 8 divisors (see below), whose sum is σ = 2419248384. Its totient is φ = 1848036520.

The previous prime is 2125242221. The next prime is 2125242263. The reversal of 2125242251 is 1522425212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2125242251 - 2⁶ = 2125242187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2125242251.

It is not an unprimeable number, because it can be changed into a prime (2125242221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4199831 + ... + 4200336.

It is an arithmetic number, because the mean of its divisors is an integer number (302406048).

Almost surely, 2^2125242251 is an apocalyptic number.

2125242251 is a deficient number, since it is larger than the sum of its proper divisors (294006133).

2125242251 is a wasteful number, since it uses less digits than its factorization.

2125242251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400201.

The product of its digits is 3200, while the sum is 26.

The square root of 2125242251 is about 46100.3497925992. The cubic root of 2125242251 is about 1285.6896480246.

Adding to 2125242251 its reverse (1522425212), we get a palindrome (3647667463).

The spelling of 2125242251 in words is "two billion, one hundred twenty-five million, two hundred forty-two thousand, two hundred fifty-one".