25729894 has 4 divisors (see below), whose sum is σ = 38594844. Its totient is φ = 12864946.

The previous prime is 25729871. The next prime is 25729927. The reversal of 25729894 is 49892752.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6432472 + ... + 6432475.

It is an arithmetic number, because the mean of its divisors is an integer number (9648711).

Almost surely, 2^25729894 is an apocalyptic number.

25729894 is a deficient number, since it is larger than the sum of its proper divisors (12864950).

25729894 is a wasteful number, since it uses less digits than its factorization.

25729894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12864949.

The product of its digits is 362880, while the sum is 46.

The square root of 25729894 is about 5072.4642926294. The cubic root of 25729894 is about 295.2201516662.

The spelling of 25729894 in words is "twenty-five million, seven hundred twenty-nine thousand, eight hundred ninety-four".