2749135525 has 6 divisors (see below), whose sum is σ = 3408928082. Its totient is φ = 2199308400.

The previous prime is 2749135523. The next prime is 2749135531. The reversal of 2749135525 is 5255319472.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 810142369 + 1938993156 = 28463^2 + 44034^2 .

It is not a de Polignac number, because 2749135525 - 2¹ = 2749135523 is a prime.

It is a super-2 number, since 2×2749135525² = 15115492269634051250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749135523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54982686 + ... + 54982735.

Almost surely, 2^2749135525 is an apocalyptic number.

2749135525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2749135525 is a deficient number, since it is larger than the sum of its proper divisors (659792557).

2749135525 is a wasteful number, since it uses less digits than its factorization.

2749135525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109965431 (or 109965426 counting only the distinct ones).

The product of its digits is 378000, while the sum is 43.

The square root of 2749135525 is about 52432.1993149248. The cubic root of 2749135525 is about 1400.8728443086.

The spelling of 2749135525 in words is "two billion, seven hundred forty-nine million, one hundred thirty-five thousand, five hundred twenty-five".