25742443 has 2 divisors, whose sum is σ = 25742444. Its totient is φ = 25742442.

The previous prime is 25742429. The next prime is 25742447. The reversal of 25742443 is 34424752.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25742443 - 2⁵ = 25742411 is a prime.

It is not a weakly prime, because it can be changed into another prime (25742447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12871221 + 12871222.

It is an arithmetic number, because the mean of its divisors is an integer number (12871222).

Almost surely, 2^25742443 is an apocalyptic number.

25742443 is a deficient number, since it is larger than the sum of its proper divisors (1).

25742443 is an equidigital number, since it uses as much as digits as its factorization.

25742443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 31.

The square root of 25742443 is about 5073.7011145711. The cubic root of 25742443 is about 295.2681388513.

The spelling of 25742443 in words is "twenty-five million, seven hundred forty-two thousand, four hundred forty-three".