125402172 has 48 divisors (see below), whose sum is σ = 341241600. Its totient is φ = 35828016.

The previous prime is 125402159. The next prime is 125402197. The reversal of 125402172 is 271204521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11118 + ... + 19349.

It is an arithmetic number, because the mean of its divisors is an integer number (7109200).

Almost surely, 2^125402172 is an apocalyptic number.

125402172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125402172 is an abundant number, since it is smaller than the sum of its proper divisors (215839428).

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

125402172 is a wasteful number, since it uses less digits than its factorization.

125402172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30495 (or 30479 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 125402172 is about 11198.3111226649. The cubic root of 125402172 is about 500.5356552753.

Adding to 125402172 its reverse (271204521), we get a palindrome (396606693).

The spelling of 125402172 in words is "one hundred twenty-five million, four hundred two thousand, one hundred seventy-two".