6525129957 has 32 divisors (see below), whose sum is σ = 8970998400. Its totient is φ = 4217069568.

The previous prime is 6525129937. The next prime is 6525129977. The reversal of 6525129957 is 7599215256.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6525129937) and next prime (6525129977).

It is not a de Polignac number, because 6525129957 - 2¹¹ = 6525127909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6525129917) 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 31 ways as a sum of consecutive naturals, for example, 6678253 + ... + 6679229.

It is an arithmetic number, because the mean of its divisors is an integer number (280343700).

Almost surely, 2^6525129957 is an apocalyptic number.

It is an amenable number.

6525129957 is a deficient number, since it is larger than the sum of its proper divisors (2445868443).

6525129957 is a wasteful number, since it uses less digits than its factorization.

6525129957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525.

The product of its digits is 1701000, while the sum is 51.

The square root of 6525129957 is about 80778.2765166477. The cubic root of 6525129957 is about 1868.6575585388.

The spelling of 6525129957 in words is "six billion, five hundred twenty-five million, one hundred twenty-nine thousand, nine hundred fifty-seven".