25212587 has 2 divisors, whose sum is σ = 25212588. Its totient is φ = 25212586.

The previous prime is 25212559. The next prime is 25212611. The reversal of 25212587 is 78521252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25212587 - 2¹⁴ = 25196203 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (25212527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12606293 + 12606294.

It is an arithmetic number, because the mean of its divisors is an integer number (12606294).

Almost surely, 2^25212587 is an apocalyptic number.

25212587 is a deficient number, since it is larger than the sum of its proper divisors (1).

25212587 is an equidigital number, since it uses as much as digits as its factorization.

25212587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11200, while the sum is 32.

The square root of 25212587 is about 5021.2136979021. The cubic root of 25212587 is about 293.2282464767.

The spelling of 25212587 in words is "twenty-five million, two hundred twelve thousand, five hundred eighty-seven".