25002513545413 has 4 divisors (see below), whose sum is σ = 25864669184940. Its totient is φ = 24140357905888.

The previous prime is 25002513545411. The next prime is 25002513545437. The reversal of 25002513545413 is 31454531520052.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19645478311684 + 5357035233729 = 4432322^2 + 2314527^2 .

It is a cyclic number.

It is not a de Polignac number, because 25002513545413 - 2¹ = 25002513545411 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 (25002513545411) 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, 431077819720 + ... + 431077819777.

It is an arithmetic number, because the mean of its divisors is an integer number (6466167296235).

Almost surely, 2^{25002513545413} is an apocalyptic number.

It is an amenable number.

25002513545413 is a deficient number, since it is larger than the sum of its proper divisors (862155639527).

25002513545413 is an equidigital number, since it uses as much as digits as its factorization.

25002513545413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862155639526.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 25002513545413 in words is "twenty-five trillion, two billion, five hundred thirteen million, five hundred forty-five thousand, four hundred thirteen".