2123265465525 has 24 divisors (see below), whose sum is σ = 3695226917920. Its totient is φ = 1072807813440.

The previous prime is 2123265465523. The next prime is 2123265465547. The reversal of 2123265465525 is 5255645623212.

It is not a de Polignac number, because 2123265465525 - 2¹ = 2123265465523 is a prime.

It is a super-3 number, since 3×2123265465525³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123265465523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 745004002 + ... + 745006851.

Almost surely, 2^{2123265465525} is an apocalyptic number.

2123265465525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2123265465525 is a deficient number, since it is larger than the sum of its proper divisors (1571961452395).

2123265465525 is a wasteful number, since it uses less digits than its factorization.

2123265465525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490010885 (or 1490010880 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 48.

The spelling of 2123265465525 in words is "two trillion, one hundred twenty-three billion, two hundred sixty-five million, four hundred sixty-five thousand, five hundred twenty-five".