2051540225 has 12 divisors (see below), whose sum is σ = 2907325824. Its totient is φ = 1406770320.

The previous prime is 2051540213. The next prime is 2051540237. The reversal of 2051540225 is 5220451502.

It is an interprime number because it is at equal distance from previous prime (2051540213) and next prime (2051540237).

It is not a de Polignac number, because 2051540225 - 2¹⁰ = 2051539201 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2051540194 and 2051540203.

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, 5861369 + ... + 5861718.

It is an arithmetic number, because the mean of its divisors is an integer number (242277152).

Almost surely, 2^2051540225 is an apocalyptic number.

2051540225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2051540225 is a deficient number, since it is larger than the sum of its proper divisors (855785599).

2051540225 is a wasteful number, since it uses less digits than its factorization.

2051540225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11723104 (or 11723099 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 2051540225 is about 45293.9314367830. The cubic root of 2051540225 is about 1270.6521595230.

Adding to 2051540225 its reverse (5220451502), we get a palindrome (7271991727).

The spelling of 2051540225 in words is "two billion, fifty-one million, five hundred forty thousand, two hundred twenty-five".