25042429 has 2 divisors, whose sum is σ = 25042430. Its totient is φ = 25042428.

The previous prime is 25042421. The next prime is 25042441. The reversal of 25042429 is 92424052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23088025 + 1954404 = 4805^2 + 1398^2 .

It is a cyclic number.

It is not a de Polignac number, because 25042429 - 2³ = 25042421 is a prime.

It is a super-3 number, since 3×25042429³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25042397 and 25042406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25042421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12521214 + 12521215.

It is an arithmetic number, because the mean of its divisors is an integer number (12521215).

Almost surely, 2^25042429 is an apocalyptic number.

It is an amenable number.

25042429 is a deficient number, since it is larger than the sum of its proper divisors (1).

25042429 is an equidigital number, since it uses as much as digits as its factorization.

25042429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 25042429 is about 5004.2411013060. The cubic root of 25042429 is about 292.5670978609.

The spelling of 25042429 in words is "twenty-five million, forty-two thousand, four hundred twenty-nine".