13551205425 has 24 divisors (see below), whose sum is σ = 22414815360. Its totient is φ = 7224033600.

The previous prime is 13551205417. The next prime is 13551205433. The reversal of 13551205425 is 52450215531.

It is an interprime number because it is at equal distance from previous prime (13551205417) and next prime (13551205433).

It is not a de Polignac number, because 13551205425 - 2³ = 13551205417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130360 + ... + 209990.

It is an arithmetic number, because the mean of its divisors is an integer number (933950640).

Almost surely, 2^13551205425 is an apocalyptic number.

13551205425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13551205425 is a deficient number, since it is larger than the sum of its proper divisors (8863609935).

13551205425 is a wasteful number, since it uses less digits than its factorization.

13551205425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81913 (or 81908 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 13551205425 in words is "thirteen billion, five hundred fifty-one million, two hundred five thousand, four hundred twenty-five".