125623521611 has 6 divisors (see below), whose sum is σ = 146133484380. Its totient is φ = 107677304196.

The previous prime is 125623521601. The next prime is 125623521637. The reversal of 125623521611 is 116125326521.

It is a de Polignac number, because none of the positive numbers 2^k-125623521611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125623521601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1281872621 + ... + 1281872718.

It is an arithmetic number, because the mean of its divisors is an integer number (24355580730).

Almost surely, 2^125623521611 is an apocalyptic number.

125623521611 is a deficient number, since it is larger than the sum of its proper divisors (20509962769).

125623521611 is an equidigital number, since it uses as much as digits as its factorization.

125623521611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563745353 (or 2563745346 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The spelling of 125623521611 in words is "one hundred twenty-five billion, six hundred twenty-three million, five hundred twenty-one thousand, six hundred eleven".