2500037521 has 2 divisors, whose sum is σ = 2500037522. Its totient is φ = 2500037520.

The previous prime is 2500037471. The next prime is 2500037591. The reversal of 2500037521 is 1257300052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972692225 + 527345296 = 44415^2 + 22964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2500037521 is a prime.

It is not a weakly prime, because it can be changed into another prime (2500037591) 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, 1250018760 + 1250018761.

It is an arithmetic number, because the mean of its divisors is an integer number (1250018761).

Almost surely, 2^2500037521 is an apocalyptic number.

It is an amenable number.

2500037521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500037521 is an equidigital number, since it uses as much as digits as its factorization.

2500037521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 2500037521 is about 50000.3752085922. The cubic root of 2500037521 is about 1357.2155981077.

Adding to 2500037521 its reverse (1257300052), we get a palindrome (3757337573).

The spelling of 2500037521 in words is "two billion, five hundred million, thirty-seven thousand, five hundred twenty-one".