2256521425 has 24 divisors (see below), whose sum is σ = 2834282880. Its totient is φ = 1781980800.

The previous prime is 2256521417. The next prime is 2256521431. The reversal of 2256521425 is 5241256522.

It is not a de Polignac number, because 2256521425 - 2³ = 2256521417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 923205 + ... + 925645.

It is an arithmetic number, because the mean of its divisors is an integer number (118095120).

Almost surely, 2^2256521425 is an apocalyptic number.

2256521425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2256521425 is a deficient number, since it is larger than the sum of its proper divisors (577761455).

2256521425 is a wasteful number, since it uses less digits than its factorization.

2256521425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913 (or 2908 counting only the distinct ones).

The product of its digits is 48000, while the sum is 34.

The square root of 2256521425 is about 47502.8570193415. The cubic root of 2256521425 is about 1311.6354736057.

Adding to 2256521425 its reverse (5241256522), we get a palindrome (7497777947).

The spelling of 2256521425 in words is "two billion, two hundred fifty-six million, five hundred twenty-one thousand, four hundred twenty-five".