265125561025 has 24 divisors (see below), whose sum is σ = 366253042680. Its totient is φ = 189033815040.

The previous prime is 265125561017. The next prime is 265125561031. The reversal of 265125561025 is 520165521562.

It can be written as a sum of positive squares in 12 ways, for example, as 35669232769 + 229456328256 = 188863^2 + 479016^2 .

It is not a de Polignac number, because 265125561025 - 2³ = 265125561017 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14055592 + ... + 14074441.

It is an arithmetic number, because the mean of its divisors is an integer number (15260543445).

Almost surely, 2^265125561025 is an apocalyptic number.

265125561025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

265125561025 is a deficient number, since it is larger than the sum of its proper divisors (101127481655).

265125561025 is a wasteful number, since it uses less digits than its factorization.

265125561025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28130085 (or 28130080 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

The spelling of 265125561025 in words is "two hundred sixty-five billion, one hundred twenty-five million, five hundred sixty-one thousand, twenty-five".