2542905897 has 16 divisors (see below), whose sum is σ = 3875629440. Its totient is φ = 1452817152.

The previous prime is 2542905889. The next prime is 2542905901. The reversal of 2542905897 is 7985092452.

It is not a de Polignac number, because 2542905897 - 2³ = 2542905889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2542905857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174193 + ... + 188225.

It is an arithmetic number, because the mean of its divisors is an integer number (242226840).

Almost surely, 2^2542905897 is an apocalyptic number.

It is an amenable number.

2542905897 is a deficient number, since it is larger than the sum of its proper divisors (1332723543).

2542905897 is a wasteful number, since it uses less digits than its factorization.

2542905897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22672.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The square root of 2542905897 is about 50427.2336837943. The cubic root of 2542905897 is about 1364.9291106230.

The spelling of 2542905897 in words is "two billion, five hundred forty-two million, nine hundred five thousand, eight hundred ninety-seven".