2542522261 has 8 divisors (see below), whose sum is σ = 2715908184. Its totient is φ = 2371783680.

The previous prime is 2542522243. The next prime is 2542522267. The reversal of 2542522261 is 1622252452.

It can be written as a sum of positive squares in 4 ways, for example, as 15952036 + 2526570225 = 3994^2 + 50265^2 .

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 2542522261 - 2²¹ = 2540425109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542522267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659850 + ... + 663691.

It is an arithmetic number, because the mean of its divisors is an integer number (339488523).

Almost surely, 2^2542522261 is an apocalyptic number.

It is an amenable number.

2542522261 is a deficient number, since it is larger than the sum of its proper divisors (173385923).

2542522261 is a wasteful number, since it uses less digits than its factorization.

2542522261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323671.

The product of its digits is 19200, while the sum is 31.

The square root of 2542522261 is about 50423.4296830352. The cubic root of 2542522261 is about 1364.8604670710.

The spelling of 2542522261 in words is "two billion, five hundred forty-two million, five hundred twenty-two thousand, two hundred sixty-one".