25780075 has 12 divisors (see below), whose sum is σ = 33848280. Its totient is φ = 19410560.

The previous prime is 25780063. The next prime is 25780087. The reversal of 25780075 is 57008752.

It is an interprime number because it is at equal distance from previous prime (25780063) and next prime (25780087).

It is not a de Polignac number, because 25780075 - 2²³ = 17391467 is a prime.

It is a super-2 number, since 2×25780075² = 1329224534011250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25780075.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29905 + ... + 30754.

It is an arithmetic number, because the mean of its divisors is an integer number (2820690).

Almost surely, 2^25780075 is an apocalyptic number.

25780075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25780075 is a deficient number, since it is larger than the sum of its proper divisors (8068205).

25780075 is a wasteful number, since it uses less digits than its factorization.

25780075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60686 (or 60681 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 25780075 is about 5077.4082955776. The cubic root of 25780075 is about 295.4119496060.

The spelling of 25780075 in words is "twenty-five million, seven hundred eighty thousand, seventy-five".