3125578549 has 2 divisors, whose sum is σ = 3125578550. Its totient is φ = 3125578548.

The previous prime is 3125578541. The next prime is 3125578553. The reversal of 3125578549 is 9458755213.

3125578549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2539454449 + 586124100 = 50393^2 + 24210^2 .

It is a cyclic number.

It is not a de Polignac number, because 3125578549 - 2³ = 3125578541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3125578541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1562789274 + 1562789275.

It is an arithmetic number, because the mean of its divisors is an integer number (1562789275).

Almost surely, 2^3125578549 is an apocalyptic number.

It is an amenable number.

3125578549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3125578549 is an equidigital number, since it uses as much as digits as its factorization.

3125578549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 49.

The square root of 3125578549 is about 55906.8738975808. The cubic root of 3125578549 is about 1462.0990868745.

The spelling of 3125578549 in words is "three billion, one hundred twenty-five million, five hundred seventy-eight thousand, five hundred forty-nine".