125561474527 has 16 divisors (see below), whose sum is σ = 129247870752. Its totient is φ = 121941227520.

The previous prime is 125561474503. The next prime is 125561474543. The reversal of 125561474527 is 725474165521.

It is a cyclic number.

It is not a de Polignac number, because 125561474527 - 2⁷ = 125561474399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125561474587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1349952 + ... + 1439962.

It is an arithmetic number, because the mean of its divisors is an integer number (8077991922).

Almost surely, 2^125561474527 is an apocalyptic number.

125561474527 is a deficient number, since it is larger than the sum of its proper divisors (3686396225).

125561474527 is an equidigital number, since it uses as much as digits as its factorization.

125561474527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90378.

The product of its digits is 2352000, while the sum is 49.

The spelling of 125561474527 in words is "one hundred twenty-five billion, five hundred sixty-one million, four hundred seventy-four thousand, five hundred twenty-seven".