25598641 has 2 divisors, whose sum is σ = 25598642. Its totient is φ = 25598640.

The previous prime is 25598633. The next prime is 25598663. The reversal of 25598641 is 14689552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14409616 + 11189025 = 3796^2 + 3345^2 .

It is a cyclic number.

It is not a de Polignac number, because 25598641 - 2³ = 25598633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25598594 and 25598603.

It is not a weakly prime, because it can be changed into another prime (25598621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12799320 + 12799321.

It is an arithmetic number, because the mean of its divisors is an integer number (12799321).

Almost surely, 2^25598641 is an apocalyptic number.

It is an amenable number.

25598641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25598641 is an equidigital number, since it uses as much as digits as its factorization.

25598641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 40.

The square root of 25598641 is about 5059.5099565076. The cubic root of 25598641 is about 294.7173045919.

The spelling of 25598641 in words is "twenty-five million, five hundred ninety-eight thousand, six hundred forty-one".