1521252587472 has 40 divisors (see below), whose sum is σ = 4056673570560. Its totient is φ = 490726640640.

The previous prime is 1521252587471. The next prime is 1521252587479. The reversal of 1521252587472 is 2747852521251.

It is a super-2 number, since 2×1521252587472² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521252587471) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 511172097 + ... + 511175072.

It is an arithmetic number, because the mean of its divisors is an integer number (101416839264).

Almost surely, 2^{1521252587472} is an apocalyptic number.

1521252587472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1521252587472 is an abundant number, since it is smaller than the sum of its proper divisors (2535420983088).

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

1521252587472 is a wasteful number, since it uses less digits than its factorization.

1521252587472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022347211 (or 1022347205 counting only the distinct ones).

The product of its digits is 3136000, while the sum is 51.

The spelling of 1521252587472 in words is "one trillion, five hundred twenty-one billion, two hundred fifty-two million, five hundred eighty-seven thousand, four hundred seventy-two".