125820100 has 36 divisors (see below), whose sum is σ = 312035584. Its totient is φ = 43138080.

The previous prime is 125820073. The next prime is 125820113. The reversal of 125820100 is 1028521.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89172 + ... + 90571.

Almost surely, 2^125820100 is an apocalyptic number.

125820100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125820100 is an abundant number, since it is smaller than the sum of its proper divisors (186215484).

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

125820100 is a wasteful number, since it uses less digits than its factorization.

125820100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179764 (or 179757 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 125820100 is about 11216.9559150422. The cubic root of 125820100 is about 501.0910840062.

Adding to 125820100 its reverse (1028521), we get a palindrome (126848621).

The spelling of 125820100 in words is "one hundred twenty-five million, eight hundred twenty thousand, one hundred".