125297172 has 384 divisors, whose sum is σ = 466636800. Its totient is φ = 27993600.

The previous prime is 125297171. The next prime is 125297201. The reversal of 125297172 is 271792521.

It is a super-2 number, since 2×125297172² = 31398762622395168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125297171) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2054022 + ... + 2054082.

It is an arithmetic number, because the mean of its divisors is an integer number (1215200).

Almost surely, 2^125297172 is an apocalyptic number.

125297172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 125297172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233318400).

125297172 is an abundant number, since it is smaller than the sum of its proper divisors (341339628).

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

125297172 is a wasteful number, since it uses less digits than its factorization.

125297172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 116 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 125297172 is about 11193.6219339408. The cubic root of 125297172 is about 500.3959157520.

It can be divided in two parts, 12529 and 7172, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 125297172 in words is "one hundred twenty-five million, two hundred ninety-seven thousand, one hundred seventy-two".