25301433040 has 40 divisors (see below), whose sum is σ = 63350898408. Its totient is φ = 9342067200.

The previous prime is 25301433019. The next prime is 25301433083. The reversal of 25301433040 is 4033410352.

It can be written as a sum of positive squares in 4 ways, for example, as 1645762624 + 23655670416 = 40568^2 + 153804^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 25301432996 and 25301433014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12163111 + ... + 12165190.

Almost surely, 2^25301433040 is an apocalyptic number.

25301433040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25301433040 is an abundant number, since it is smaller than the sum of its proper divisors (38049465368).

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

25301433040 is a wasteful number, since it uses less digits than its factorization.

25301433040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24328327 (or 24328321 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 25301433040 its reverse (4033410352), we get a palindrome (29334843392).

The spelling of 25301433040 in words is "twenty-five billion, three hundred one million, four hundred thirty-three thousand, forty".