25287533 has 2 divisors, whose sum is σ = 25287534. Its totient is φ = 25287532.

The previous prime is 25287523. The next prime is 25287541. The reversal of 25287533 is 33578252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19245769 + 6041764 = 4387^2 + 2458^2 .

It is a cyclic number.

It is not a de Polignac number, because 25287533 - 2¹⁰ = 25286509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25287493 and 25287502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25287503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12643766 + 12643767.

It is an arithmetic number, because the mean of its divisors is an integer number (12643767).

Almost surely, 2^25287533 is an apocalyptic number.

It is an amenable number.

25287533 is a deficient number, since it is larger than the sum of its proper divisors (1).

25287533 is an equidigital number, since it uses as much as digits as its factorization.

25287533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 25287533 is about 5028.6710968207. The cubic root of 25287533 is about 293.5185055280.

The spelling of 25287533 in words is "twenty-five million, two hundred eighty-seven thousand, five hundred thirty-three".