25930861 has 4 divisors (see below), whose sum is σ = 28288224. Its totient is φ = 23573500.

The previous prime is 25930811. The next prime is 25930873. The reversal of 25930861 is 16803952.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25930861 - 2⁹ = 25930349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25930811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178665 + ... + 1178686.

It is an arithmetic number, because the mean of its divisors is an integer number (7072056).

Almost surely, 2^25930861 is an apocalyptic number.

It is an amenable number.

25930861 is a deficient number, since it is larger than the sum of its proper divisors (2357363).

25930861 is a wasteful number, since it uses less digits than its factorization.

25930861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357362.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 25930861 is about 5092.2353637671. The cubic root of 25930861 is about 295.9867788409.

The spelling of 25930861 in words is "twenty-five million, nine hundred thirty thousand, eight hundred sixty-one".