25421075 has 6 divisors (see below), whose sum is σ = 31522164. Its totient is φ = 20336840.

The previous prime is 25421063. The next prime is 25421083. The reversal of 25421075 is 57012452.

It is not a de Polignac number, because 25421075 - 2⁴ = 25421059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508397 + ... + 508446.

It is an arithmetic number, because the mean of its divisors is an integer number (5253694).

Almost surely, 2^25421075 is an apocalyptic number.

25421075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25421075 is a deficient number, since it is larger than the sum of its proper divisors (6101089).

25421075 is a wasteful number, since it uses less digits than its factorization.

25421075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016853 (or 1016848 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 25421075 is about 5041.9316734760. The cubic root of 25421075 is about 294.0342834132.

The spelling of 25421075 in words is "twenty-five million, four hundred twenty-one thousand, seventy-five".