2505742061 has 8 divisors (see below), whose sum is σ = 2629298880. Its totient is φ = 2383402912.

The previous prime is 2505742049. The next prime is 2505742087. The reversal of 2505742061 is 1602475052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2505742061 - 2³⁰ = 1432000237 is a prime.

It is a super-3 number, since 3×2505742061³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2505742661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300200 + ... + 308433.

It is an arithmetic number, because the mean of its divisors is an integer number (328662360).

Almost surely, 2^2505742061 is an apocalyptic number.

It is an amenable number.

2505742061 is a deficient number, since it is larger than the sum of its proper divisors (123556819).

2505742061 is a wasteful number, since it uses less digits than its factorization.

2505742061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608835.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 2505742061 is about 50057.3876765458. The cubic root of 2505742061 is about 1358.2471038774.

The spelling of 2505742061 in words is "two billion, five hundred five million, seven hundred forty-two thousand, sixty-one".