210125550400 has 42 divisors (see below), whose sum is σ = 517040186390. Its totient is φ = 84050219520.

The previous prime is 210125550359. The next prime is 210125550421. The reversal of 210125550400 is 4055521012.

It can be written as a sum of positive squares in 3 ways, for example, as 26626406976 + 183499143424 = 163176^2 + 428368^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65662635 + ... + 65665834.

Almost surely, 2^210125550400 is an apocalyptic number.

210125550400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210125550400 is an abundant number, since it is smaller than the sum of its proper divisors (306914635990).

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

210125550400 is a wasteful number, since it uses less digits than its factorization.

210125550400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131328491 (or 131328476 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 210125550400 in words is "two hundred ten billion, one hundred twenty-five million, five hundred fifty thousand, four hundred".