7525115261 has 2 divisors, whose sum is σ = 7525115262. Its totient is φ = 7525115260.

The previous prime is 7525115239. The next prime is 7525115287. The reversal of 7525115261 is 1625115257.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6741395236 + 783720025 = 82106^2 + 27995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7525115261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7525115231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3762557630 + 3762557631.

It is an arithmetic number, because the mean of its divisors is an integer number (3762557631).

Almost surely, 2^7525115261 is an apocalyptic number.

It is an amenable number.

7525115261 is a deficient number, since it is larger than the sum of its proper divisors (1).

7525115261 is an equidigital number, since it uses as much as digits as its factorization.

7525115261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 35.

The square root of 7525115261 is about 86747.4222153027. The cubic root of 7525115261 is about 1959.6163400276.

The spelling of 7525115261 in words is "seven billion, five hundred twenty-five million, one hundred fifteen thousand, two hundred sixty-one".