37525247561 has 2 divisors, whose sum is σ = 37525247562. Its totient is φ = 37525247560.

The previous prime is 37525247533. The next prime is 37525247579. The reversal of 37525247561 is 16574252573.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25016167225 + 12509080336 = 158165^2 + 111844^2 .

It is a cyclic number.

It is not a de Polignac number, because 37525247561 - 2¹⁰ = 37525246537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (37525247531) 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, 18762623780 + 18762623781.

It is an arithmetic number, because the mean of its divisors is an integer number (18762623781).

Almost surely, 2^37525247561 is an apocalyptic number.

It is an amenable number.

37525247561 is a deficient number, since it is larger than the sum of its proper divisors (1).

37525247561 is an equidigital number, since it uses as much as digits as its factorization.

37525247561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1764000, while the sum is 47.

The spelling of 37525247561 in words is "thirty-seven billion, five hundred twenty-five million, two hundred forty-seven thousand, five hundred sixty-one".