1251500225504 has 48 divisors (see below), whose sum is σ = 2528187209856. Its totient is φ = 609471744000.

The previous prime is 1251500225497. The next prime is 1251500225513. The reversal of 1251500225504 is 4055220051521.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5072 + ... + 1582095.

It is an arithmetic number, because the mean of its divisors is an integer number (52670566872).

Almost surely, 2^{1251500225504} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1251500225504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264093604928).

1251500225504 is an abundant number, since it is smaller than the sum of its proper divisors (1276686984352).

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

1251500225504 is a wasteful number, since it uses less digits than its factorization.

1251500225504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587819 (or 1587811 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

The spelling of 1251500225504 in words is "one trillion, two hundred fifty-one billion, five hundred million, two hundred twenty-five thousand, five hundred four".