25801480036 has 12 divisors (see below), whose sum is σ = 45771119212. Its totient is φ = 12724017408.

The previous prime is 25801480013. The next prime is 25801480037. The reversal of 25801480036 is 63008410852.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5368492900 + 20432987136 = 73270^2 + 142944^2 .

It is a super-2 number, since 2×25801480036² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25801479977 and 25801480004.

It is not an unprimeable number, because it can be changed into a prime (25801480037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44180325 + ... + 44180908.

Almost surely, 2^25801480036 is an apocalyptic number.

It is an amenable number.

25801480036 is a deficient number, since it is larger than the sum of its proper divisors (19969639176).

25801480036 is a wasteful number, since it uses less digits than its factorization.

25801480036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88361310 (or 88361308 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

Adding to 25801480036 its reverse (63008410852), we get a palindrome (88809890888).

The spelling of 25801480036 in words is "twenty-five billion, eight hundred one million, four hundred eighty thousand, thirty-six".