125220445720 has 32 divisors (see below), whose sum is σ = 281761059600. Its totient is φ = 50085501568.

The previous prime is 125220445717. The next prime is 125220445739. The reversal of 125220445720 is 27544022521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785766 + ... + 931594.

Almost surely, 2^125220445720 is an apocalyptic number.

125220445720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125220445720 is an abundant number, since it is smaller than the sum of its proper divisors (156540613880).

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

125220445720 is a wasteful number, since it uses less digits than its factorization.

125220445720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167307 (or 167303 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 34.

The spelling of 125220445720 in words is "one hundred twenty-five billion, two hundred twenty million, four hundred forty-five thousand, seven hundred twenty".