1205251235400 has 96 divisors (see below), whose sum is σ = 3736836005760. Its totient is φ = 321352400640.

The previous prime is 1205251235399. The next prime is 1205251235413. The reversal of 1205251235400 is 45321525021.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3971454 + ... + 4264146.

It is an arithmetic number, because the mean of its divisors is an integer number (38925375060).

Almost surely, 2^{1205251235400} is an apocalyptic number.

1205251235400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205251235400 is an abundant number, since it is smaller than the sum of its proper divisors (2531584770360).

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

1205251235400 is a wasteful number, since it uses less digits than its factorization.

1205251235400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299575 (or 299566 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The spelling of 1205251235400 in words is "one trillion, two hundred five billion, two hundred fifty-one million, two hundred thirty-five thousand, four hundred".