125545420 has 96 divisors (see below), whose sum is σ = 354041856. Its totient is φ = 36115200.

The previous prime is 125545411. The next prime is 125545439. The reversal of 125545420 is 24545521.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16885 + ... + 23155.

It is an arithmetic number, because the mean of its divisors is an integer number (3687936).

Almost surely, 2^125545420 is an apocalyptic number.

125545420 is a gapful number since it is divisible by the number (10) 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 125545420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177020928).

125545420 is an abundant number, since it is smaller than the sum of its proper divisors (228496436).

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

125545420 is a wasteful number, since it uses less digits than its factorization.

125545420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6311 (or 6309 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 125545420 is about 11204.7052616300. The cubic root of 125545420 is about 500.7261715060.

It can be divided in two parts, 125 and 545420, that added together give a palindrome (545545).

The spelling of 125545420 in words is "one hundred twenty-five million, five hundred forty-five thousand, four hundred twenty".