3125513481 has 8 divisors (see below), whose sum is σ = 4214175840. Its totient is φ = 2060263392.

The previous prime is 3125513449. The next prime is 3125513497. The reversal of 3125513481 is 1843155213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3125513481 - 2⁵ = 3125513449 is a prime.

It is a super-2 number, since 2×3125513481² = 19537669039825474722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3125513431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5852755 + ... + 5853288.

It is an arithmetic number, because the mean of its divisors is an integer number (526771980).

Almost surely, 2^3125513481 is an apocalyptic number.

It is an amenable number.

3125513481 is a deficient number, since it is larger than the sum of its proper divisors (1088662359).

3125513481 is a wasteful number, since it uses less digits than its factorization.

3125513481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11706135.

The product of its digits is 14400, while the sum is 33.

The square root of 3125513481 is about 55906.2919625332. The cubic root of 3125513481 is about 1462.0889408571.

Adding to 3125513481 its reverse (1843155213), we get a palindrome (4968668694).

The spelling of 3125513481 in words is "three billion, one hundred twenty-five million, five hundred thirteen thousand, four hundred eighty-one".