13155351520425 has 12 divisors (see below), whose sum is σ = 21750181180560. Its totient is φ = 7016187477520.

The previous prime is 13155351520417. The next prime is 13155351520447. The reversal of 13155351520425 is 52402515355131.

It is not a de Polignac number, because 13155351520425 - 2³ = 13155351520417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87702343395 + ... + 87702343544.

It is an arithmetic number, because the mean of its divisors is an integer number (1812515098380).

Almost surely, 2^{13155351520425} is an apocalyptic number.

13155351520425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13155351520425 is a deficient number, since it is larger than the sum of its proper divisors (8594829660135).

13155351520425 is a wasteful number, since it uses less digits than its factorization.

13155351520425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175404686952 (or 175404686947 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 42.

Adding to 13155351520425 its reverse (52402515355131), we get a palindrome (65557866875556).

The spelling of 13155351520425 in words is "thirteen trillion, one hundred fifty-five billion, three hundred fifty-one million, five hundred twenty thousand, four hundred twenty-five".