2540405235 has 32 divisors (see below), whose sum is σ = 4109253120. Its totient is φ = 1340057088.

The previous prime is 2540405233. The next prime is 2540405239. The reversal of 2540405235 is 5325040452.

It is not a de Polignac number, because 2540405235 - 2¹ = 2540405233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2540405233) 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, 1705371 + ... + 1706859.

It is an arithmetic number, because the mean of its divisors is an integer number (128414160).

Almost surely, 2^2540405235 is an apocalyptic number.

2540405235 is a deficient number, since it is larger than the sum of its proper divisors (1568847885).

2540405235 is a wasteful number, since it uses less digits than its factorization.

2540405235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667.

The product of its (nonzero) digits is 24000, while the sum is 30.

The square root of 2540405235 is about 50402.4328281880. The cubic root of 2540405235 is about 1364.4815457830.

Adding to 2540405235 its reverse (5325040452), we get a palindrome (7865445687).

The spelling of 2540405235 in words is "two billion, five hundred forty million, four hundred five thousand, two hundred thirty-five".