125631552 has 56 divisors (see below), whose sum is σ = 340152736. Its totient is φ = 40900608.

The previous prime is 125631551. The next prime is 125631559. The reversal of 125631552 is 255136521.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (125631551) 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, 648 + ... + 15864.

It is an arithmetic number, because the mean of its divisors is an integer number (6074156).

Almost surely, 2^125631552 is an apocalyptic number.

125631552 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 125631552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170076368).

125631552 is an abundant number, since it is smaller than the sum of its proper divisors (214521184).

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

125631552 is a wasteful number, since it uses less digits than its factorization.

125631552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15275 (or 15265 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 125631552 is about 11208.5481664665. The cubic root of 125631552 is about 500.8406551391.

The spelling of 125631552 in words is "one hundred twenty-five million, six hundred thirty-one thousand, five hundred fifty-two".