3538025561 has 4 divisors (see below), whose sum is σ = 4043457792. Its totient is φ = 3032593332.

The previous prime is 3538025539. The next prime is 3538025591. The reversal of 3538025561 is 1655208353.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3538025561 - 2¹⁰ = 3538024537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3538025501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252716105 + ... + 252716118.

It is an arithmetic number, because the mean of its divisors is an integer number (1010864448).

Almost surely, 2^3538025561 is an apocalyptic number.

It is an amenable number.

3538025561 is a deficient number, since it is larger than the sum of its proper divisors (505432231).

3538025561 is an equidigital number, since it uses as much as digits as its factorization.

3538025561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505432230.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 3538025561 is about 59481.3042980734. The cubic root of 3538025561 is about 1523.7731687820.

The spelling of 3538025561 in words is "three billion, five hundred thirty-eight million, twenty-five thousand, five hundred sixty-one".