125543213400 has 576 divisors, whose sum is σ = 443310912000. Its totient is φ = 29140300800.

The previous prime is 125543213399. The next prime is 125543213417. The reversal of 125543213400 is 4312345521.

It is a super-2 number, since 2×125543213400² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 1151772546 + ... + 1151772654.

It is an arithmetic number, because the mean of its divisors is an integer number (769637000).

Almost surely, 2^125543213400 is an apocalyptic number.

125543213400 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 125543213400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221655456000).

125543213400 is an abundant number, since it is smaller than the sum of its proper divisors (317767698600).

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

125543213400 is a wasteful number, since it uses less digits than its factorization.

125543213400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 125543213400 its reverse (4312345521), we get a palindrome (129855558921).

The spelling of 125543213400 in words is "one hundred twenty-five billion, five hundred forty-three million, two hundred thirteen thousand, four hundred".