1355145525 has 24 divisors (see below), whose sum is σ = 2489453760. Its totient is φ = 722743920.

The previous prime is 1355145521. The next prime is 1355145557. The reversal of 1355145525 is 5255415531.

1355145525 is a `hidden beast` number, since 13 + 551 + 45 + 52 + 5 = 666.

It is not a de Polignac number, because 1355145525 - 2² = 1355145521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1355145525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355145521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1003137 + ... + 1004486.

It is an arithmetic number, because the mean of its divisors is an integer number (103727240).

Almost surely, 2^1355145525 is an apocalyptic number.

1355145525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1355145525 is a deficient number, since it is larger than the sum of its proper divisors (1134308235).

1355145525 is a wasteful number, since it uses less digits than its factorization.

1355145525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007642 (or 2007631 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The square root of 1355145525 is about 36812.3012728083. The cubic root of 1355145525 is about 1106.6118379696.

The spelling of 1355145525 in words is "one billion, three hundred fifty-five million, one hundred forty-five thousand, five hundred twenty-five".