125666526220 has 12 divisors (see below), whose sum is σ = 263899705104. Its totient is φ = 50266610480.

The previous prime is 125666526211. The next prime is 125666526229. The reversal of 125666526220 is 22625666521.

It is an interprime number because it is at equal distance from previous prime (125666526211) and next prime (125666526229).

It is not an unprimeable number, because it can be changed into a prime (125666526229) 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, 3141663136 + ... + 3141663175.

It is an arithmetic number, because the mean of its divisors is an integer number (21991642092).

Almost surely, 2^125666526220 is an apocalyptic number.

125666526220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125666526220 is an abundant number, since it is smaller than the sum of its proper divisors (138233178884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125666526220 is a wasteful number, since it uses less digits than its factorization.

125666526220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283326320 (or 6283326318 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 125666526220 in words is "one hundred twenty-five billion, six hundred sixty-six million, five hundred twenty-six thousand, two hundred twenty".