25531350036 has 24 divisors (see below), whose sum is σ = 60129911520. Its totient is φ = 8430912672.

The previous prime is 25531350017. The next prime is 25531350037. The reversal of 25531350036 is 63005313552.

It is a junction number, because it is equal to n+sod(n) for n = 25531349979 and 25531350006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25531350037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9940831 + ... + 9943398.

It is an arithmetic number, because the mean of its divisors is an integer number (2505412980).

Almost surely, 2^25531350036 is an apocalyptic number.

It is an amenable number.

25531350036 is an abundant number, since it is smaller than the sum of its proper divisors (34598561484).

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

25531350036 is a wasteful number, since it uses less digits than its factorization.

25531350036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19884343 (or 19884341 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 33.

Adding to 25531350036 its reverse (63005313552), we get a palindrome (88536663588).

The spelling of 25531350036 in words is "twenty-five billion, five hundred thirty-one million, three hundred fifty thousand, thirty-six".