1251400533404 has 18 divisors (see below), whose sum is σ = 2547493943400. Its totient is φ = 536314514232.

The previous prime is 1251400533353. The next prime is 1251400533413. The reversal of 1251400533404 is 4043350041521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3192348104 + ... + 3192348495.

It is an arithmetic number, because the mean of its divisors is an integer number (141527441300).

Almost surely, 2^{1251400533404} is an apocalyptic number.

1251400533404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1251400533404 is an abundant number, since it is smaller than the sum of its proper divisors (1296093409996).

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

1251400533404 is a wasteful number, since it uses less digits than its factorization.

1251400533404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6384696617 (or 6384696608 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1251400533404 its reverse (4043350041521), we get a palindrome (5294750574925).

The spelling of 1251400533404 in words is "one trillion, two hundred fifty-one billion, four hundred million, five hundred thirty-three thousand, four hundred four".