25532531 has 2 divisors, whose sum is σ = 25532532. Its totient is φ = 25532530.

The previous prime is 25532513. The next prime is 25532537. The reversal of 25532531 is 13523552.

Together with previous prime (25532513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25532531 - 2¹⁴ = 25516147 is a prime.

It is a super-2 number, since 2×25532531² = 1303820278531922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25532531.

It is not a weakly prime, because it can be changed into another prime (25532537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12766265 + 12766266.

It is an arithmetic number, because the mean of its divisors is an integer number (12766266).

Almost surely, 2^25532531 is an apocalyptic number.

25532531 is a deficient number, since it is larger than the sum of its proper divisors (1).

25532531 is an equidigital number, since it uses as much as digits as its factorization.

25532531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 26.

The square root of 25532531 is about 5052.9724915143. The cubic root of 25532531 is about 294.4633775993.

The spelling of 25532531 in words is "twenty-five million, five hundred thirty-two thousand, five hundred thirty-one".