135445543425 has 72 divisors (see below), whose sum is σ = 246383444736. Its totient is φ = 71111905920.

The previous prime is 135445543381. The next prime is 135445543427. The reversal of 135445543425 is 524345544531.

135445543425 is a `hidden beast` number, since 1 + 3 + 5 + 44 + 554 + 34 + 25 = 666.

It is not a de Polignac number, because 135445543425 - 2⁷ = 135445543297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (135445543427) 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 71 ways as a sum of consecutive naturals, for example, 42766192 + ... + 42769358.

It is an arithmetic number, because the mean of its divisors is an integer number (3421992288).

Almost surely, 2^135445543425 is an apocalyptic number.

135445543425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135445543425 is a deficient number, since it is larger than the sum of its proper divisors (110937901311).

135445543425 is a wasteful number, since it uses less digits than its factorization.

135445543425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6087 (or 6079 counting only the distinct ones).

The product of its digits is 2880000, while the sum is 45.

The spelling of 135445543425 in words is "one hundred thirty-five billion, four hundred forty-five million, five hundred forty-three thousand, four hundred twenty-five".