2129500425 has 48 divisors (see below), whose sum is σ = 3956496768. Its totient is φ = 1002777600.

The previous prime is 2129500397. The next prime is 2129500501. The reversal of 2129500425 is 5240059212.

It is not a de Polignac number, because 2129500425 - 2⁶ = 2129500361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2129500392 and 2129500401.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25056 + ... + 69905.

It is an arithmetic number, because the mean of its divisors is an integer number (82427016).

Almost surely, 2^2129500425 is an apocalyptic number.

2129500425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2129500425 is a deficient number, since it is larger than the sum of its proper divisors (1826996343).

2129500425 is a wasteful number, since it uses less digits than its factorization.

2129500425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95010 (or 95005 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2129500425 is about 46146.5104314508. The cubic root of 2129500425 is about 1286.5477522238.

Adding to 2129500425 its reverse (5240059212), we get a palindrome (7369559637).

The spelling of 2129500425 in words is "two billion, one hundred twenty-nine million, five hundred thousand, four hundred twenty-five".