25144213512 has 64 divisors (see below), whose sum is σ = 69282158400. Its totient is φ = 7540899840.

The previous prime is 25144213499. The next prime is 25144213529. The reversal of 25144213512 is 21531244152.

It is a super-3 number, since 3×25144213512³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25144213512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465337 + ... + 516552.

It is an arithmetic number, because the mean of its divisors is an integer number (1082533725).

Almost surely, 2^25144213512 is an apocalyptic number.

25144213512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

25144213512 is an abundant number, since it is smaller than the sum of its proper divisors (44137944888).

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

25144213512 is a wasteful number, since it uses less digits than its factorization.

25144213512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982006 (or 982002 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

Adding to 25144213512 its reverse (21531244152), we get a palindrome (46675457664).

The spelling of 25144213512 in words is "twenty-five billion, one hundred forty-four million, two hundred thirteen thousand, five hundred twelve".