135521422525 has 12 divisors (see below), whose sum is σ = 168391643872. Its totient is φ = 108194505840.

The previous prime is 135521422523. The next prime is 135521422541. The reversal of 135521422525 is 525224125531.

It is not a de Polignac number, because 135521422525 - 2¹ = 135521422523 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135521422523) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5553387 + ... + 5577736.

Almost surely, 2^135521422525 is an apocalyptic number.

It is an amenable number.

135521422525 is a deficient number, since it is larger than the sum of its proper divisors (32870221347).

135521422525 is a wasteful number, since it uses less digits than its factorization.

135521422525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11131620 (or 11131615 counting only the distinct ones).

The product of its digits is 120000, while the sum is 37.

The spelling of 135521422525 in words is "one hundred thirty-five billion, five hundred twenty-one million, four hundred twenty-two thousand, five hundred twenty-five".