1520228425840 has 480 divisors, whose sum is σ = 4082670978048. Its totient is φ = 523566489600.

The previous prime is 1520228425831. The next prime is 1520228425841. The reversal of 1520228425840 is 485248220251.

It is a super-2 number, since 2×1520228425840² (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 (1520228425841) 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 95 ways as a sum of consecutive naturals, for example, 3096187995 + ... + 3096188485.

Almost surely, 2^{1520228425840} is an apocalyptic number.

1520228425840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520228425840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2041335489024).

1520228425840 is an abundant number, since it is smaller than the sum of its proper divisors (2562442552208).

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

1520228425840 is a wasteful number, since it uses less digits than its factorization.

1520228425840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 409600, while the sum is 43.

The spelling of 1520228425840 in words is "one trillion, five hundred twenty billion, two hundred twenty-eight million, four hundred twenty-five thousand, eight hundred forty".