1251501133404 has 48 divisors (see below), whose sum is σ = 2934504832896. Its totient is φ = 415120958400.

The previous prime is 1251501133349. The next prime is 1251501133451. The reversal of 1251501133404 is 4043311051521.

It is a super-2 number, since 2×1251501133404² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5363734 + ... + 5592194.

It is an arithmetic number, because the mean of its divisors is an integer number (61135517352).

Almost surely, 2^{1251501133404} is an apocalyptic number.

It is an amenable number.

1251501133404 is an abundant number, since it is smaller than the sum of its proper divisors (1683003699492).

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

1251501133404 is a wasteful number, since it uses less digits than its factorization.

1251501133404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230706 (or 230704 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1251501133404 its reverse (4043311051521), we get a palindrome (5294812184925).

The spelling of 1251501133404 in words is "one trillion, two hundred fifty-one billion, five hundred one million, one hundred thirty-three thousand, four hundred four".