125225100 has 432 divisors, whose sum is σ = 530799360. Its totient is φ = 23846400.

The previous prime is 125225099. The next prime is 125225137. The reversal of 125225100 is 1522521.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 900831 + ... + 900969.

Almost surely, 2^125225100 is an apocalyptic number.

125225100 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 125225100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265399680).

125225100 is an abundant number, since it is smaller than the sum of its proper divisors (405574260).

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

125225100 is a wasteful number, since it uses less digits than its factorization.

125225100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 125225100 is about 11190.4021375463. The cubic root of 125225100 is about 500.2999533533.

Adding to 125225100 its reverse (1522521), we get a palindrome (126747621).

The spelling of 125225100 in words is "one hundred twenty-five million, two hundred twenty-five thousand, one hundred".