125217320 has 32 divisors (see below), whose sum is σ = 282078720. Its totient is φ = 50026560.

The previous prime is 125217311. The next prime is 125217329. The reversal of 125217320 is 23712521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (125217311) and next prime (125217329).

It is not an unprimeable number, because it can be changed into a prime (125217329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47969 + ... + 50511.

It is an arithmetic number, because the mean of its divisors is an integer number (8814960).

Almost surely, 2^125217320 is an apocalyptic number.

125217320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125217320 is an abundant number, since it is smaller than the sum of its proper divisors (156861400).

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

125217320 is a wasteful number, since it uses less digits than its factorization.

125217320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785 (or 3781 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 125217320 is about 11190.0545128252. The cubic root of 125217320 is about 500.2895922403.

Adding to 125217320 its reverse (23712521), we get a palindrome (148929841).

The spelling of 125217320 in words is "one hundred twenty-five million, two hundred seventeen thousand, three hundred twenty".