1525113314220 has 96 divisors (see below), whose sum is σ = 4326620272128. Its totient is φ = 401363610112.

The previous prime is 1525113314201. The next prime is 1525113314239. The reversal of 1525113314220 is 224133115251.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1525113314201) and next prime (1525113314239).

It is a super-2 number, since 2×1525113314220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1236832 + ... + 2140088.

It is an arithmetic number, because the mean of its divisors is an integer number (45068961168).

Almost surely, 2^{1525113314220} is an apocalyptic number.

1525113314220 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 1525113314220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2163310136064).

1525113314220 is an abundant number, since it is smaller than the sum of its proper divisors (2801506957908).

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

1525113314220 is a wasteful number, since it uses less digits than its factorization.

1525113314220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903639 (or 903637 counting only the distinct ones).

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

Adding to 1525113314220 its reverse (224133115251), we get a palindrome (1749246429471).

The spelling of 1525113314220 in words is "one trillion, five hundred twenty-five billion, one hundred thirteen million, three hundred fourteen thousand, two hundred twenty".