265250399 has 2 divisors, whose sum is σ = 265250400. Its totient is φ = 265250398.

The previous prime is 265250383. The next prime is 265250411. The reversal of 265250399 is 993052562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 265250399 - 2⁴ = 265250383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (265250339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132625199 + 132625200.

It is an arithmetic number, because the mean of its divisors is an integer number (132625200).

Almost surely, 2^265250399 is an apocalyptic number.

265250399 is a deficient number, since it is larger than the sum of its proper divisors (1).

265250399 is an equidigital number, since it uses as much as digits as its factorization.

265250399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 265250399 is about 16286.5097243086. The cubic root of 265250399 is about 642.5180736486.

The spelling of 265250399 in words is "two hundred sixty-five million, two hundred fifty thousand, three hundred ninety-nine".