2051257525 has 6 divisors (see below), whose sum is σ = 2543559362. Its totient is φ = 1641006000.

The previous prime is 2051257513. The next prime is 2051257529. The reversal of 2051257525 is 5257521502.

It can be written as a sum of positive squares in 3 ways, for example, as 107682129 + 1943575396 = 10377^2 + 44086^2 .

It is not a de Polignac number, because 2051257525 - 2¹¹ = 2051255477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051257529) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 41025126 + ... + 41025175.

Almost surely, 2^2051257525 is an apocalyptic number.

2051257525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2051257525 is a deficient number, since it is larger than the sum of its proper divisors (492301837).

2051257525 is an equidigital number, since it uses as much as digits as its factorization.

2051257525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82050311 (or 82050306 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 2051257525 is about 45290.8106021520. The cubic root of 2051257525 is about 1270.5937920158.

The spelling of 2051257525 in words is "two billion, fifty-one million, two hundred fifty-seven thousand, five hundred twenty-five".