125523554501 has 4 divisors (see below), whose sum is σ = 125529633600. Its totient is φ = 125517475404.

The previous prime is 125523554479. The next prime is 125523554503. The reversal of 125523554501 is 105455325521.

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 125523554501 - 2¹⁴ = 125523538117 is a prime.

It is a super-4 number, since 4×125523554501⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125523554503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3008471 + ... + 3049908.

It is an arithmetic number, because the mean of its divisors is an integer number (31382408400).

Almost surely, 2^125523554501 is an apocalyptic number.

It is an amenable number.

125523554501 is a deficient number, since it is larger than the sum of its proper divisors (6079099).

125523554501 is an equidigital number, since it uses as much as digits as its factorization.

125523554501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6079098.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 125523554501 in words is "one hundred twenty-five billion, five hundred twenty-three million, five hundred fifty-four thousand, five hundred one".