1525099897 has 2 divisors, whose sum is σ = 1525099898. Its totient is φ = 1525099896.

The previous prime is 1525099889. The next prime is 1525099913. The reversal of 1525099897 is 7989905251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1204367616 + 320732281 = 34704^2 + 17909^2 .

It is a cyclic number.

It is not a de Polignac number, because 1525099897 - 2³ = 1525099889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1525099097) 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, 762549948 + 762549949.

It is an arithmetic number, because the mean of its divisors is an integer number (762549949).

Almost surely, 2^1525099897 is an apocalyptic number.

It is an amenable number.

1525099897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1525099897 is an equidigital number, since it uses as much as digits as its factorization.

1525099897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 55.

The square root of 1525099897 is about 39052.5274086070. The cubic root of 1525099897 is about 1151.0638918358.

The spelling of 1525099897 in words is "one billion, five hundred twenty-five million, ninety-nine thousand, eight hundred ninety-seven".