25528473 has 16 divisors (see below), whose sum is σ = 38626560. Its totient is φ = 16656048.

The previous prime is 25528463. The next prime is 25528499. The reversal of 25528473 is 37482552.

It is not a de Polignac number, because 25528473 - 2⁹ = 25527961 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25528423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8790 + ... + 11327.

It is an arithmetic number, because the mean of its divisors is an integer number (2414160).

Almost surely, 2^25528473 is an apocalyptic number.

It is an amenable number.

25528473 is a deficient number, since it is larger than the sum of its proper divisors (13098087).

25528473 is a wasteful number, since it uses less digits than its factorization.

25528473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20173 (or 20167 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 25528473 is about 5052.5709297347. The cubic root of 25528473 is about 294.4477766431.

It can be divided in two parts, 2552 and 8473, that added together give a square (11025 = 105²).

The spelling of 25528473 in words is "twenty-five million, five hundred twenty-eight thousand, four hundred seventy-three".