265125561031 has 2 divisors, whose sum is σ = 265125561032. Its totient is φ = 265125561030.

The previous prime is 265125561017. The next prime is 265125561047. The reversal of 265125561031 is 130165521562.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 265125561031 - 2¹¹ = 265125558983 is a prime.

It is a super-2 number, since 2×265125561031² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265125565031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132562780515 + 132562780516.

It is an arithmetic number, because the mean of its divisors is an integer number (132562780516).

Almost surely, 2^265125561031 is an apocalyptic number.

265125561031 is a deficient number, since it is larger than the sum of its proper divisors (1).

265125561031 is an equidigital number, since it uses as much as digits as its factorization.

265125561031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 265125561031 in words is "two hundred sixty-five billion, one hundred twenty-five million, five hundred sixty-one thousand, thirty-one".