25553741 has 2 divisors, whose sum is σ = 25553742. Its totient is φ = 25553740.

The previous prime is 25553729. The next prime is 25553743. The reversal of 25553741 is 14735552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21436900 + 4116841 = 4630^2 + 2029^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25553741 is a prime.

Together with 25553743, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 25553698 and 25553707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25553743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776870 + 12776871.

It is an arithmetic number, because the mean of its divisors is an integer number (12776871).

Almost surely, 2^25553741 is an apocalyptic number.

It is an amenable number.

25553741 is a deficient number, since it is larger than the sum of its proper divisors (1).

25553741 is an equidigital number, since it uses as much as digits as its factorization.

25553741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 25553741 is about 5055.0708204732. The cubic root of 25553741 is about 294.5448924274.

The spelling of 25553741 in words is "twenty-five million, five hundred fifty-three thousand, seven hundred forty-one".