25531475 has 6 divisors (see below), whose sum is σ = 31659060. Its totient is φ = 20425160.

The previous prime is 25531453. The next prime is 25531523. The reversal of 25531475 is 57413552.

It is not a de Polignac number, because 25531475 - 2¹⁶ = 25465939 is a prime.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 510605 + ... + 510654.

It is an arithmetic number, because the mean of its divisors is an integer number (5276510).

Almost surely, 2^25531475 is an apocalyptic number.

25531475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25531475 is a deficient number, since it is larger than the sum of its proper divisors (6127585).

25531475 is a wasteful number, since it uses less digits than its factorization.

25531475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021269 (or 1021264 counting only the distinct ones).

The product of its digits is 21000, while the sum is 32.

The square root of 25531475 is about 5052.8679974842. The cubic root of 25531475 is about 294.4593179729.

The spelling of 25531475 in words is "twenty-five million, five hundred thirty-one thousand, four hundred seventy-five".