25215435332 has 12 divisors (see below), whose sum is σ = 44355650556. Its totient is φ = 12542392320.

The previous prime is 25215435331. The next prime is 25215435383. The reversal of 25215435332 is 23353451252.

It can be written as a sum of positive squares in 2 ways, for example, as 12928599616 + 12286835716 = 113704^2 + 110846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25215435292 and 25215435301.

It is not an unprimeable number, because it can be changed into a prime (25215435331) 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, 16330469 + ... + 16332012.

It is an arithmetic number, because the mean of its divisors is an integer number (3696304213).

Almost surely, 2^25215435332 is an apocalyptic number.

It is an amenable number.

25215435332 is a deficient number, since it is larger than the sum of its proper divisors (19140215224).

25215435332 is a wasteful number, since it uses less digits than its factorization.

25215435332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32662678 (or 32662676 counting only the distinct ones).

The product of its digits is 108000, while the sum is 35.

Adding to 25215435332 its reverse (23353451252), we get a palindrome (48568886584).

The spelling of 25215435332 in words is "twenty-five billion, two hundred fifteen million, four hundred thirty-five thousand, three hundred thirty-two".