125620656 has 80 divisors (see below), whose sum is σ = 372142848. Its totient is φ = 35769600.

The previous prime is 125620637. The next prime is 125620681. The reversal of 125620656 is 656026521.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154491 + ... + 155301.

Almost surely, 2^125620656 is an apocalyptic number.

125620656 is a gapful number since it is divisible by the number (16) 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 125620656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186071424).

125620656 is an abundant number, since it is smaller than the sum of its proper divisors (246522192).

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

125620656 is a wasteful number, since it uses less digits than its factorization.

125620656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 125620656 is about 11208.0620983290. The cubic root of 125620656 is about 500.8261754497.

It can be divided in two parts, 1256 and 20656, that added together give a palindrome (21912).

The spelling of 125620656 in words is "one hundred twenty-five million, six hundred twenty thousand, six hundred fifty-six".