25402630627559 has 4 divisors (see below), whose sum is σ = 25403461433904. Its totient is φ = 25401799821216.

The previous prime is 25402630627537. The next prime is 25402630627571. The reversal of 25402630627559 is 95572603620452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25402630627559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25402630627589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415357307 + ... + 415418460.

It is an arithmetic number, because the mean of its divisors is an integer number (6350865358476).

Almost surely, 2^{25402630627559} is an apocalyptic number.

25402630627559 is a deficient number, since it is larger than the sum of its proper divisors (830806345).

25402630627559 is an equidigital number, since it uses as much as digits as its factorization.

25402630627559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830806344.

The product of its (nonzero) digits is 27216000, while the sum is 56.

The spelling of 25402630627559 in words is "twenty-five trillion, four hundred two billion, six hundred thirty million, six hundred twenty-seven thousand, five hundred fifty-nine".