25526591 has 2 divisors, whose sum is σ = 25526592. Its totient is φ = 25526590.

The previous prime is 25526581. The next prime is 25526597. The reversal of 25526591 is 19562552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25526591 - 2¹⁴ = 25510207 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25526597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12763295 + 12763296.

It is an arithmetic number, because the mean of its divisors is an integer number (12763296).

Almost surely, 2^25526591 is an apocalyptic number.

25526591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25526591 is an equidigital number, since it uses as much as digits as its factorization.

25526591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 35.

The square root of 25526591 is about 5052.3846844832. The cubic root of 25526591 is about 294.4405407444.

The spelling of 25526591 in words is "twenty-five million, five hundred twenty-six thousand, five hundred ninety-one".