25746891 has 16 divisors (see below), whose sum is σ = 36578304. Its totient is φ = 16052864.

The previous prime is 25746887. The next prime is 25746907. The reversal of 25746891 is 19864752.

It is a cyclic number.

It is not a de Polignac number, because 25746891 - 2² = 25746887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25746841) 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, 7006 + ... + 10028.

It is an arithmetic number, because the mean of its divisors is an integer number (2286144).

Almost surely, 2^25746891 is an apocalyptic number.

25746891 is a deficient number, since it is larger than the sum of its proper divisors (10831413).

25746891 is a wasteful number, since it uses less digits than its factorization.

25746891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3210.

The product of its digits is 120960, while the sum is 42.

The square root of 25746891 is about 5074.1394344263. The cubic root of 25746891 is about 295.2851441920.

The spelling of 25746891 in words is "twenty-five million, seven hundred forty-six thousand, eight hundred ninety-one".