25531375 has 8 divisors (see below), whose sum is σ = 31863312. Its totient is φ = 20425000.

The previous prime is 25531361. The next prime is 25531409. The reversal of 25531375 is 57313552.

It is not a de Polignac number, because 25531375 - 2¹¹ = 25529327 is a prime.

It is a super-2 number, since 2×25531375² = 1303702218781250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102001 + ... + 102250.

It is an arithmetic number, because the mean of its divisors is an integer number (3982914).

Almost surely, 2^25531375 is an apocalyptic number.

25531375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25531375 is a deficient number, since it is larger than the sum of its proper divisors (6331937).

25531375 is an equidigital number, since it uses as much as digits as its factorization.

25531375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204266 (or 204256 counting only the distinct ones).

The product of its digits is 15750, while the sum is 31.

The square root of 25531375 is about 5052.8581021042. The cubic root of 25531375 is about 294.4589335328.

The spelling of 25531375 in words is "twenty-five million, five hundred thirty-one thousand, three hundred seventy-five".