265972669 has 2 divisors, whose sum is σ = 265972670. Its totient is φ = 265972668.

The previous prime is 265972643. The next prime is 265972691. The reversal of 265972669 is 966279562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189200025 + 76772644 = 13755^2 + 8762^2 .

It is a cyclic number.

It is not a de Polignac number, because 265972669 - 2¹⁵ = 265939901 is a prime.

It is a super-2 number, since 2×265972669² = 141482921309967122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265972969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132986334 + 132986335.

It is an arithmetic number, because the mean of its divisors is an integer number (132986335).

Almost surely, 2^265972669 is an apocalyptic number.

It is an amenable number.

265972669 is a deficient number, since it is larger than the sum of its proper divisors (1).

265972669 is an equidigital number, since it uses as much as digits as its factorization.

265972669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 52.

The square root of 265972669 is about 16308.6685232118. The cubic root of 265972669 is about 643.1007318320.

The spelling of 265972669 in words is "two hundred sixty-five million, nine hundred seventy-two thousand, six hundred sixty-nine".