265601125403 has 4 divisors (see below), whose sum is σ = 265607421288. Its totient is φ = 265594829520.

The previous prime is 265601125373. The next prime is 265601125423. The reversal of 265601125403 is 304521106562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 265601125403 - 2³⁴ = 248421256219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265601125423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3084233 + ... + 3169178.

It is an arithmetic number, because the mean of its divisors is an integer number (66401855322).

Almost surely, 2^265601125403 is an apocalyptic number.

265601125403 is a deficient number, since it is larger than the sum of its proper divisors (6295885).

265601125403 is an equidigital number, since it uses as much as digits as its factorization.

265601125403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295884.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 265601125403 in words is "two hundred sixty-five billion, six hundred one million, one hundred twenty-five thousand, four hundred three".