2125421275 has 12 divisors (see below), whose sum is σ = 2661619824. Its totient is φ = 1683500000.

The previous prime is 2125421267. The next prime is 2125421297. The reversal of 2125421275 is 5721245212.

It is a happy number.

It is not a de Polignac number, because 2125421275 - 2³ = 2125421267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418351 + ... + 423400.

It is an arithmetic number, because the mean of its divisors is an integer number (221801652).

Almost surely, 2^2125421275 is an apocalyptic number.

2125421275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2125421275 is a deficient number, since it is larger than the sum of its proper divisors (536198549).

2125421275 is a wasteful number, since it uses less digits than its factorization.

2125421275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841862 (or 841857 counting only the distinct ones).

The product of its digits is 11200, while the sum is 31.

The square root of 2125421275 is about 46102.2914289518. The cubic root of 2125421275 is about 1285.7257478843.

Adding to 2125421275 its reverse (5721245212), we get a palindrome (7846666487).

The spelling of 2125421275 in words is "two billion, one hundred twenty-five million, four hundred twenty-one thousand, two hundred seventy-five".