125523530513 has 8 divisors (see below), whose sum is σ = 132922293480. Its totient is φ = 118126437120.

The previous prime is 125523530477. The next prime is 125523530527. The reversal of 125523530513 is 315035325521.

It can be written as a sum of positive squares in 4 ways, for example, as 34951424209 + 90572106304 = 186953^2 + 300952^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 125523530513 - 2¹⁶ = 125523464977 is a prime.

It is a super-3 number, since 3×125523530513³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (125523530543) 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 7 ways as a sum of consecutive naturals, for example, 260918 + ... + 564911.

It is an arithmetic number, because the mean of its divisors is an integer number (16615286685).

Almost surely, 2^125523530513 is an apocalyptic number.

It is an amenable number.

125523530513 is a deficient number, since it is larger than the sum of its proper divisors (7398762967).

125523530513 is an equidigital number, since it uses as much as digits as its factorization.

125523530513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834787.

The product of its (nonzero) digits is 67500, while the sum is 35.

The spelling of 125523530513 in words is "one hundred twenty-five billion, five hundred twenty-three million, five hundred thirty thousand, five hundred thirteen".