25478575 has 24 divisors (see below), whose sum is σ = 32752368. Its totient is φ = 19649280.

The previous prime is 25478573. The next prime is 25478581. The reversal of 25478575 is 57587452.

It is not a de Polignac number, because 25478575 - 2¹ = 25478573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25478573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147189 + ... + 147361.

It is an arithmetic number, because the mean of its divisors is an integer number (1364682).

Almost surely, 2^25478575 is an apocalyptic number.

25478575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25478575 is a deficient number, since it is larger than the sum of its proper divisors (7273793).

25478575 is a wasteful number, since it uses less digits than its factorization.

25478575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 358 counting only the distinct ones).

The product of its digits is 392000, while the sum is 43.

The square root of 25478575 is about 5047.6306322868. The cubic root of 25478575 is about 294.2558087943.

The spelling of 25478575 in words is "twenty-five million, four hundred seventy-eight thousand, five hundred seventy-five".