25445129 has 2 divisors, whose sum is σ = 25445130. Its totient is φ = 25445128.

The previous prime is 25445089. The next prime is 25445143. The reversal of 25445129 is 92154452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23814400 + 1630729 = 4880^2 + 1277^2 .

It is a cyclic number.

It is not a de Polignac number, because 25445129 - 2²⁴ = 8667913 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25445095 and 25445104.

It is not a weakly prime, because it can be changed into another prime (25445149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12722564 + 12722565.

It is an arithmetic number, because the mean of its divisors is an integer number (12722565).

Almost surely, 2^25445129 is an apocalyptic number.

It is an amenable number.

25445129 is a deficient number, since it is larger than the sum of its proper divisors (1).

25445129 is an equidigital number, since it uses as much as digits as its factorization.

25445129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 32.

The square root of 25445129 is about 5044.3165047408. The cubic root of 25445129 is about 294.1269948221.

The spelling of 25445129 in words is "twenty-five million, four hundred forty-five thousand, one hundred twenty-nine".