25212304040 has 64 divisors (see below), whose sum is σ = 70725432960. Its totient is φ = 7858379520.

The previous prime is 25212304037. The next prime is 25212304043. The reversal of 25212304040 is 4040321252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25212304037) and next prime (25212304043).

It is a junction number, because it is equal to n+sod(n) for n = 25212303997 and 25212304015.

It is not an unprimeable number, because it can be changed into a prime (25212304043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4089827 + ... + 4095986.

It is an arithmetic number, because the mean of its divisors is an integer number (1105084890).

Almost surely, 2^25212304040 is an apocalyptic number.

25212304040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25212304040 is an abundant number, since it is smaller than the sum of its proper divisors (45513128920).

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

25212304040 is a wasteful number, since it uses less digits than its factorization.

25212304040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8185842 (or 8185838 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 25212304040 its reverse (4040321252), we get a palindrome (29252625292).

The spelling of 25212304040 in words is "twenty-five billion, two hundred twelve million, three hundred four thousand, forty".