2545242261 has 32 divisors (see below), whose sum is σ = 3946890240. Its totient is φ = 1447167744.

The previous prime is 2545242257. The next prime is 2545242311. The reversal of 2545242261 is 1622425452.

2545242261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2545242261 - 2² = 2545242257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545242221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34815 + ... + 79388.

It is an arithmetic number, because the mean of its divisors is an integer number (123340320).

Almost surely, 2^2545242261 is an apocalyptic number.

It is an amenable number.

2545242261 is a deficient number, since it is larger than the sum of its proper divisors (1401647979).

2545242261 is a wasteful number, since it uses less digits than its factorization.

2545242261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114265.

The product of its digits is 38400, while the sum is 33.

The square root of 2545242261 is about 50450.3940618901. The cubic root of 2545242261 is about 1365.3470045880.

The spelling of 2545242261 in words is "two billion, five hundred forty-five million, two hundred forty-two thousand, two hundred sixty-one".