125666261322 has 24 divisors (see below), whose sum is σ = 292366404576. Its totient is φ = 35904646008.

The previous prime is 125666261311. The next prime is 125666261333. The reversal of 125666261322 is 223162666521.

It is an interprime number because it is at equal distance from previous prime (125666261311) and next prime (125666261333).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213717838 + ... + 213718425.

It is an arithmetic number, because the mean of its divisors is an integer number (12181933524).

Almost surely, 2^125666261322 is an apocalyptic number.

125666261322 is an abundant number, since it is smaller than the sum of its proper divisors (166700143254).

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

125666261322 is a wasteful number, since it uses less digits than its factorization.

125666261322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427436282 (or 427436275 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 125666261322 in words is "one hundred twenty-five billion, six hundred sixty-six million, two hundred sixty-one thousand, three hundred twenty-two".