125145552 has 80 divisors (see below), whose sum is σ = 388943360. Its totient is φ = 33872256.

The previous prime is 125145539. The next prime is 125145557. The reversal of 125145552 is 255541521.

It is a super-2 number, since 2×125145552² = 31322818370769408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125145557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3418 + ... + 16185.

It is an arithmetic number, because the mean of its divisors is an integer number (4861792).

Almost surely, 2^125145552 is an apocalyptic number.

125145552 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 125145552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194471680).

125145552 is an abundant number, since it is smaller than the sum of its proper divisors (263797808).

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

125145552 is a wasteful number, since it uses less digits than its factorization.

125145552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19640 (or 19634 counting only the distinct ones).

The product of its digits is 10000, while the sum is 30.

The square root of 125145552 is about 11186.8472770482. The cubic root of 125145552 is about 500.1939940562.

The spelling of 125145552 in words is "one hundred twenty-five million, one hundred forty-five thousand, five hundred fifty-two".