25351013012 has 12 divisors (see below), whose sum is σ = 47776909236. Its totient is φ = 11700467520.

The previous prime is 25351012859. The next prime is 25351013063. The reversal of 25351013012 is 21031015352.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13225920016 + 12125092996 = 115004^2 + 110114^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243759689 + ... + 243759792.

It is an arithmetic number, because the mean of its divisors is an integer number (3981409103).

Almost surely, 2^25351013012 is an apocalyptic number.

It is an amenable number.

25351013012 is a deficient number, since it is larger than the sum of its proper divisors (22425896224).

25351013012 is a wasteful number, since it uses less digits than its factorization.

25351013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487519498 (or 487519496 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 25351013012 its reverse (21031015352), we get a palindrome (46382028364).

The spelling of 25351013012 in words is "twenty-five billion, three hundred fifty-one million, thirteen thousand, twelve".