25870043 has 2 divisors, whose sum is σ = 25870044. Its totient is φ = 25870042.

The previous prime is 25870037. The next prime is 25870049. The reversal of 25870043 is 34007852.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (25870037) and next prime (25870049).

It is a cyclic number.

It is not a de Polignac number, because 25870043 - 2⁶ = 25869979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25869988 and 25870015.

It is not a weakly prime, because it can be changed into another prime (25870049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12935021 + 12935022.

It is an arithmetic number, because the mean of its divisors is an integer number (12935022).

Almost surely, 2^25870043 is an apocalyptic number.

25870043 is a deficient number, since it is larger than the sum of its proper divisors (1).

25870043 is an equidigital number, since it uses as much as digits as its factorization.

25870043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 25870043 is about 5086.2602174879. The cubic root of 25870043 is about 295.7551961506.

Adding to 25870043 its reverse (34007852), we get a palindrome (59877895).

The spelling of 25870043 in words is "twenty-five million, eight hundred seventy thousand, forty-three".