1241525501 has 2 divisors, whose sum is σ = 1241525502. Its totient is φ = 1241525500.

The previous prime is 1241525459. The next prime is 1241525503. The reversal of 1241525501 is 1055251421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 753557401 + 487968100 = 27451^2 + 22090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241525501 - 2²⁶ = 1174416637 is a prime.

It is a Sophie Germain prime.

Together with 1241525503, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241525503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620762750 + 620762751.

It is an arithmetic number, because the mean of its divisors is an integer number (620762751).

Almost surely, 2^1241525501 is an apocalyptic number.

It is an amenable number.

1241525501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241525501 is an equidigital number, since it uses as much as digits as its factorization.

1241525501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1241525501 is about 35235.2877240984. The cubic root of 1241525501 is about 1074.7774555730. Note that the first 3 decimals are identical.

Adding to 1241525501 its reverse (1055251421), we get a palindrome (2296776922).

The spelling of 1241525501 in words is "one billion, two hundred forty-one million, five hundred twenty-five thousand, five hundred one".