25429787 has 2 divisors, whose sum is σ = 25429788. Its totient is φ = 25429786.

The previous prime is 25429753. The next prime is 25429801. The reversal of 25429787 is 78792452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25429787 - 2¹⁰ = 25428763 is a prime.

It is not a weakly prime, because it can be changed into another prime (25429687) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12714893 + 12714894.

It is an arithmetic number, because the mean of its divisors is an integer number (12714894).

Almost surely, 2^25429787 is an apocalyptic number.

25429787 is a deficient number, since it is larger than the sum of its proper divisors (1).

25429787 is an equidigital number, since it uses as much as digits as its factorization.

25429787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 25429787 is about 5042.7955540553. The cubic root of 25429787 is about 294.0678688549.

The spelling of 25429787 in words is "twenty-five million, four hundred twenty-nine thousand, seven hundred eighty-seven".