3125149249 has 4 divisors (see below), whose sum is σ = 3132268480. Its totient is φ = 3118030020.

The previous prime is 3125149211. The next prime is 3125149267. The reversal of 3125149249 is 9429415213.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9429415213 = 1259 ⋅7489607.

It is a cyclic number.

It is not a de Polignac number, because 3125149249 - 2¹⁷ = 3125018177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3125149289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3558957 + ... + 3559834.

It is an arithmetic number, because the mean of its divisors is an integer number (783067120).

Almost surely, 2^3125149249 is an apocalyptic number.

It is an amenable number.

3125149249 is a deficient number, since it is larger than the sum of its proper divisors (7119231).

3125149249 is an equidigital number, since it uses as much as digits as its factorization.

3125149249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119230.

The product of its digits is 77760, while the sum is 40.

The square root of 3125149249 is about 55903.0343451945. The cubic root of 3125149249 is about 1462.0321437612.

The spelling of 3125149249 in words is "three billion, one hundred twenty-five million, one hundred forty-nine thousand, two hundred forty-nine".