125005503331 has 4 divisors (see below), whose sum is σ = 125013657600. Its totient is φ = 124997349064.

The previous prime is 125005503307. The next prime is 125005503341. The reversal of 125005503331 is 133305500521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125005503331 - 2¹⁷ = 125005372259 is a prime.

It is a super-2 number, since 2×125005503331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125005503331.

It is not an unprimeable number, because it can be changed into a prime (125005503341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4054096 + ... + 4084813.

It is an arithmetic number, because the mean of its divisors is an integer number (31253414400).

Almost surely, 2^125005503331 is an apocalyptic number.

125005503331 is a deficient number, since it is larger than the sum of its proper divisors (8154269).

125005503331 is an equidigital number, since it uses as much as digits as its factorization.

125005503331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8154268.

The product of its (nonzero) digits is 6750, while the sum is 28.

The spelling of 125005503331 in words is "one hundred twenty-five billion, five million, five hundred three thousand, three hundred thirty-one".