25004920693 has 2 divisors, whose sum is σ = 25004920694. Its totient is φ = 25004920692.

The previous prime is 25004920643. The next prime is 25004920697. The reversal of 25004920693 is 39602940052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22578668644 + 2426252049 = 150262^2 + 49257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25004920693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25004920697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12502460346 + 12502460347.

It is an arithmetic number, because the mean of its divisors is an integer number (12502460347).

Almost surely, 2^25004920693 is an apocalyptic number.

It is an amenable number.

25004920693 is a deficient number, since it is larger than the sum of its proper divisors (1).

25004920693 is an equidigital number, since it uses as much as digits as its factorization.

25004920693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 25004920693 in words is "twenty-five billion, four million, nine hundred twenty thousand, six hundred ninety-three".