25870331 has 4 divisors (see below), whose sum is σ = 26995152. Its totient is φ = 24745512.

The previous prime is 25870321. The next prime is 25870357. The reversal of 25870331 is 13307852.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25870331 is a prime.

It is a super-2 number, since 2×25870331² = 1338548052099122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25870294 and 25870303.

It is not an unprimeable number, because it can be changed into a prime (25870301) 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, 562376 + ... + 562421.

It is an arithmetic number, because the mean of its divisors is an integer number (6748788).

Almost surely, 2^25870331 is an apocalyptic number.

25870331 is a deficient number, since it is larger than the sum of its proper divisors (1124821).

25870331 is a wasteful number, since it uses less digits than its factorization.

25870331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124820.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 25870331 is about 5086.2885289767. The cubic root of 25870331 is about 295.7562936514.

The spelling of 25870331 in words is "twenty-five million, eight hundred seventy thousand, three hundred thirty-one".