265573510042 has 4 divisors (see below), whose sum is σ = 398360265066. Its totient is φ = 132786755020.

The previous prime is 265573510019. The next prime is 265573510049. The reversal of 265573510042 is 240015375562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240015375562 = 2 ⋅120007687781.

It can be written as a sum of positive squares in only one way, i.e., 238437866601 + 27135643441 = 488301^2 + 164729^2 .

It is a junction number, because it is equal to n+sod(n) for n = 265573509977 and 265573510004.

It is not an unprimeable number, because it can be changed into a prime (265573510049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66393377509 + ... + 66393377512.

Almost surely, 2^265573510042 is an apocalyptic number.

265573510042 is a deficient number, since it is larger than the sum of its proper divisors (132786755024).

265573510042 is a wasteful number, since it uses less digits than its factorization.

265573510042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132786755023.

The product of its (nonzero) digits is 252000, while the sum is 40.

The spelling of 265573510042 in words is "two hundred sixty-five billion, five hundred seventy-three million, five hundred ten thousand, forty-two".