25435429 has 2 divisors, whose sum is σ = 25435430. Its totient is φ = 25435428.

The previous prime is 25435427. The next prime is 25435441. The reversal of 25435429 is 92453452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13704804 + 11730625 = 3702^2 + 3425^2 .

It is a cyclic number.

It is not a de Polignac number, because 25435429 - 2¹ = 25435427 is a prime.

It is a super-2 number, since 2×25435429² = 1293922096828082, which contains 22 as substring.

Together with 25435427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 25435394 and 25435403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25435427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12717714 + 12717715.

It is an arithmetic number, because the mean of its divisors is an integer number (12717715).

Almost surely, 2^25435429 is an apocalyptic number.

It is an amenable number.

25435429 is a deficient number, since it is larger than the sum of its proper divisors (1).

25435429 is an equidigital number, since it uses as much as digits as its factorization.

25435429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 34.

The square root of 25435429 is about 5043.3549349614. The cubic root of 25435429 is about 294.0896151143.

The spelling of 25435429 in words is "twenty-five million, four hundred thirty-five thousand, four hundred twenty-nine".