7825260557 has 2 divisors, whose sum is σ = 7825260558. Its totient is φ = 7825260556.

The previous prime is 7825260493. The next prime is 7825260571. The reversal of 7825260557 is 7550625287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6852693961 + 972566596 = 82781^2 + 31186^2 .

It is a cyclic number.

It is not a de Polignac number, because 7825260557 - 2⁶ = 7825260493 is a prime.

It is a super-2 number, since 2×7825260557² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7825260757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3912630278 + 3912630279.

It is an arithmetic number, because the mean of its divisors is an integer number (3912630279).

Almost surely, 2^7825260557 is an apocalyptic number.

It is an amenable number.

7825260557 is a deficient number, since it is larger than the sum of its proper divisors (1).

7825260557 is an equidigital number, since it uses as much as digits as its factorization.

7825260557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176000, while the sum is 47.

The square root of 7825260557 is about 88460.5028077503. The cubic root of 7825260557 is about 1985.3310537948.

The spelling of 7825260557 in words is "seven billion, eight hundred twenty-five million, two hundred sixty thousand, five hundred fifty-seven".