25400075 has 12 divisors (see below), whose sum is σ = 31878168. Its totient is φ = 20073600.

The previous prime is 25400071. The next prime is 25400083. The reversal of 25400075 is 57000452.

It is not a de Polignac number, because 25400075 - 2² = 25400071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25400075.

It is not an unprimeable number, because it can be changed into a prime (25400071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4046 + ... + 8195.

It is an arithmetic number, because the mean of its divisors is an integer number (2656514).

Almost surely, 2^25400075 is an apocalyptic number.

25400075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25400075 is a deficient number, since it is larger than the sum of its proper divisors (6478093).

25400075 is a wasteful number, since it uses less digits than its factorization.

25400075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12334 (or 12329 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 25400075 is about 5039.8487080467. The cubic root of 25400075 is about 293.9532952171.

The spelling of 25400075 in words is "twenty-five million, four hundred thousand, seventy-five".