125725820 has 48 divisors (see below), whose sum is σ = 300561408. Its totient is φ = 43728960.

The previous prime is 125725813. The next prime is 125725823. The reversal of 125725820 is 28527521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125725823) 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, 7364 + ... + 17483.

It is an arithmetic number, because the mean of its divisors is an integer number (6261696).

Almost surely, 2^125725820 is an apocalyptic number.

125725820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125725820 is an abundant number, since it is smaller than the sum of its proper divisors (174835588).

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

125725820 is a wasteful number, since it uses less digits than its factorization.

125725820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24890 (or 24888 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 125725820 is about 11212.7525612581. The cubic root of 125725820 is about 500.9658929003.

The spelling of 125725820 in words is "one hundred twenty-five million, seven hundred twenty-five thousand, eight hundred twenty".