125125400 has 24 divisors (see below), whose sum is σ = 290917020. Its totient is φ = 50050080.

The previous prime is 125125391. The next prime is 125125433. The reversal of 125125400 is 4521521.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312614 + ... + 313013.

Almost surely, 2^125125400 is an apocalyptic number.

125125400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125125400 is an abundant number, since it is smaller than the sum of its proper divisors (165791620).

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

125125400 is a wasteful number, since it uses less digits than its factorization.

125125400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625643 (or 625634 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 125125400 is about 11185.9465401905. The cubic root of 125125400 is about 500.1671441195.

Adding to 125125400 its reverse (4521521), we get a palindrome (129646921).

The spelling of 125125400 in words is "one hundred twenty-five million, one hundred twenty-five thousand, four hundred".