2565238373542 has 16 divisors (see below), whose sum is σ = 4143938963472. Its totient is φ = 1183929783840.

The previous prime is 2565238373483. The next prime is 2565238373557. The reversal of 2565238373542 is 2453738325652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114733 + ... + 2267959.

It is an arithmetic number, because the mean of its divisors is an integer number (258996185217).

Almost surely, 2^{2565238373542} is an apocalyptic number.

2565238373542 is a deficient number, since it is larger than the sum of its proper divisors (1578700589930).

2565238373542 is a wasteful number, since it uses less digits than its factorization.

2565238373542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199063.

The product of its digits is 36288000, while the sum is 55.

The spelling of 2565238373542 in words is "two trillion, five hundred sixty-five billion, two hundred thirty-eight million, three hundred seventy-three thousand, five hundred forty-two".