25162440012 has 72 divisors (see below), whose sum is σ = 67089946560. Its totient is φ = 7929744480.

The previous prime is 25162439977. The next prime is 25162440047. The reversal of 25162440012 is 21004426152.

25162440012 is a `hidden beast` number, since 25 + 1 + 624 + 4 + 0 + 0 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (25162439977) and next prime (25162440047).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298383 + ... + 373305.

Almost surely, 2^25162440012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25162440012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33544973280).

25162440012 is an abundant number, since it is smaller than the sum of its proper divisors (41927506548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25162440012 is a wasteful number, since it uses less digits than its factorization.

25162440012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75443 (or 75438 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 25162440012 its reverse (21004426152), we get a palindrome (46166866164).

The spelling of 25162440012 in words is "twenty-five billion, one hundred sixty-two million, four hundred forty thousand, twelve".