125481312 has 192 divisors, whose sum is σ = 406667520. Its totient is φ = 37791360.

The previous prime is 125481311. The next prime is 125481329. The reversal of 125481312 is 213184521.

It is a super-2 number, since 2×125481312² = 31491119322482688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125481311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 769743 + ... + 769905.

It is an arithmetic number, because the mean of its divisors is an integer number (2118060).

Almost surely, 2^125481312 is an apocalyptic number.

125481312 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 125481312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203333760).

125481312 is an abundant number, since it is smaller than the sum of its proper divisors (281186208).

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

125481312 is an equidigital number, since it uses as much as digits as its factorization.

125481312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 179 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 125481312 is about 11201.8441338915. The cubic root of 125481312 is about 500.6409274064.

The spelling of 125481312 in words is "one hundred twenty-five million, four hundred eighty-one thousand, three hundred twelve".