7425615257 has 2 divisors, whose sum is σ = 7425615258. Its totient is φ = 7425615256.

The previous prime is 7425615221. The next prime is 7425615259. The reversal of 7425615257 is 7525165247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7422856336 + 2758921 = 86156^2 + 1661^2 .

It is a cyclic number.

It is not a de Polignac number, because 7425615257 - 2⁶ = 7425615193 is a prime.

Together with 7425615259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7425615259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3712807628 + 3712807629.

It is an arithmetic number, because the mean of its divisors is an integer number (3712807629).

Almost surely, 2^7425615257 is an apocalyptic number.

It is an amenable number.

7425615257 is a deficient number, since it is larger than the sum of its proper divisors (1).

7425615257 is an equidigital number, since it uses as much as digits as its factorization.

7425615257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588000, while the sum is 44.

The square root of 7425615257 is about 86172.0097073290. The cubic root of 7425615257 is about 1950.9410541754.

The spelling of 7425615257 in words is "seven billion, four hundred twenty-five million, six hundred fifteen thousand, two hundred fifty-seven".