25407865603 has 2 divisors, whose sum is σ = 25407865604. Its totient is φ = 25407865602.

The previous prime is 25407865583. The next prime is 25407865619. The reversal of 25407865603 is 30656870452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25407865603 - 2¹³ = 25407857411 is a prime.

It is a super-2 number, since 2×25407865603² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25407862603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12703932801 + 12703932802.

It is an arithmetic number, because the mean of its divisors is an integer number (12703932802).

Almost surely, 2^25407865603 is an apocalyptic number.

25407865603 is a deficient number, since it is larger than the sum of its proper divisors (1).

25407865603 is an equidigital number, since it uses as much as digits as its factorization.

25407865603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 25407865603 in words is "twenty-five billion, four hundred seven million, eight hundred sixty-five thousand, six hundred three".