25015324913 has 4 divisors (see below), whose sum is σ = 25168793328. Its totient is φ = 24861856500.

The previous prime is 25015324897. The next prime is 25015324921. The reversal of 25015324913 is 31942351052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25015324913 - 2⁴ = 25015324897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25015324933) 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 in 3 ways as a sum of consecutive naturals, for example, 76733963 + ... + 76734288.

It is an arithmetic number, because the mean of its divisors is an integer number (6292198332).

Almost surely, 2^25015324913 is an apocalyptic number.

It is an amenable number.

25015324913 is a deficient number, since it is larger than the sum of its proper divisors (153468415).

25015324913 is a wasteful number, since it uses less digits than its factorization.

25015324913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153468414.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 25015324913 its reverse (31942351052), we get a palindrome (56957675965).

The spelling of 25015324913 in words is "twenty-five billion, fifteen million, three hundred twenty-four thousand, nine hundred thirteen".