125025321506 has 8 divisors (see below), whose sum is σ = 187971096684. Its totient is φ = 62368289280.

The previous prime is 125025321451. The next prime is 125025321521. The reversal of 125025321506 is 605123520521.

It can be written as a sum of positive squares in 2 ways, for example, as 121769592025 + 3255729481 = 348955^2 + 57059^2 .

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

It is a super-2 number, since 2×125025321506² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72184655 + ... + 72186386.

Almost surely, 2^125025321506 is an apocalyptic number.

125025321506 is a deficient number, since it is larger than the sum of its proper divisors (62945775178).

125025321506 is a wasteful number, since it uses less digits than its factorization.

125025321506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144371476.

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 125025321506 in words is "one hundred twenty-five billion, twenty-five million, three hundred twenty-one thousand, five hundred six".