25653106240 has 56 divisors (see below), whose sum is σ = 61137744120. Its totient is φ = 10252627968.

The previous prime is 25653106231. The next prime is 25653106247. The reversal of 25653106240 is 4260135652.

It can be written as a sum of positive squares in 4 ways, for example, as 369562176 + 25283544064 = 19224^2 + 159008^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25653106196 and 25653106205.

It is not an unprimeable number, because it can be changed into a prime (25653106247) 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, 355116 + ... + 421204.

Almost surely, 2^25653106240 is an apocalyptic number.

25653106240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25653106240 is an abundant number, since it is smaller than the sum of its proper divisors (35484637880).

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

25653106240 is a wasteful number, since it uses less digits than its factorization.

25653106240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67319 (or 67309 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 25653106240 in words is "twenty-five billion, six hundred fifty-three million, one hundred six thousand, two hundred forty".