7521253895957 has 2 divisors, whose sum is σ = 7521253895958. Its totient is φ = 7521253895956.

The previous prime is 7521253895921. The next prime is 7521253896007. The reversal of 7521253895957 is 7595983521257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4751589074596 + 2769664821361 = 2179814^2 + 1664231^2 .

It is a cyclic number.

It is not a de Polignac number, because 7521253895957 - 2¹² = 7521253891861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7521253895917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3760626947978 + 3760626947979.

It is an arithmetic number, because the mean of its divisors is an integer number (3760626947979).

Almost surely, 2^{7521253895957} is an apocalyptic number.

It is an amenable number.

7521253895957 is a deficient number, since it is larger than the sum of its proper divisors (1).

7521253895957 is an equidigital number, since it uses as much as digits as its factorization.

7521253895957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140000, while the sum is 68.

The spelling of 7521253895957 in words is "seven trillion, five hundred twenty-one billion, two hundred fifty-three million, eight hundred ninety-five thousand, nine hundred fifty-seven".