265099990 has 32 divisors (see below), whose sum is σ = 486272160. Its totient is φ = 104039424.

The previous prime is 265099987. The next prime is 265099993. The reversal of 265099990 is 99990562.

It is an interprime number because it is at equal distance from previous prime (265099987) and next prime (265099993).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265099993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115494 + ... + 117766.

It is an arithmetic number, because the mean of its divisors is an integer number (15196005).

Almost surely, 2^265099990 is an apocalyptic number.

265099990 is a deficient number, since it is larger than the sum of its proper divisors (221172170).

265099990 is a wasteful number, since it uses less digits than its factorization.

265099990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496.

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 265099990 is about 16281.8914748871. The cubic root of 265099990 is about 642.3966050620.

The spelling of 265099990 in words is "two hundred sixty-five million, ninety-nine thousand, nine hundred ninety".