25397827 has 18 divisors (see below), whose sum is σ = 32002308. Its totient is φ = 20088432.

The previous prime is 25397797. The next prime is 25397833. The reversal of 25397827 is 72879352.

It is not a de Polignac number, because 25397827 - 2¹⁹ = 24873539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25397837) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6748 + ... + 9814.

It is an arithmetic number, because the mean of its divisors is an integer number (1777906).

Almost surely, 2^25397827 is an apocalyptic number.

25397827 is a deficient number, since it is larger than the sum of its proper divisors (6604481).

25397827 is a wasteful number, since it uses less digits than its factorization.

25397827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107 (or 3087 counting only the distinct ones).

The product of its digits is 211680, while the sum is 43.

The square root of 25397827 is about 5039.6256805441. The cubic root of 25397827 is about 293.9446229789.

The spelling of 25397827 in words is "twenty-five million, three hundred ninety-seven thousand, eight hundred twenty-seven".