125591225667 has 4 divisors (see below), whose sum is σ = 167454967560. Its totient is φ = 83727483776.

The previous prime is 125591225659. The next prime is 125591225681. The reversal of 125591225667 is 766522195521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125591225667 - 2³ = 125591225659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125591225167) 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, 20931870942 + ... + 20931870947.

It is an arithmetic number, because the mean of its divisors is an integer number (41863741890).

Almost surely, 2^125591225667 is an apocalyptic number.

125591225667 is a deficient number, since it is larger than the sum of its proper divisors (41863741893).

125591225667 is an equidigital number, since it uses as much as digits as its factorization.

125591225667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41863741892.

The product of its digits is 2268000, while the sum is 51.

The spelling of 125591225667 in words is "one hundred twenty-five billion, five hundred ninety-one million, two hundred twenty-five thousand, six hundred sixty-seven".