25480021268 has 12 divisors (see below), whose sum is σ = 48020040180. Its totient is φ = 11760009792.

The previous prime is 25480021261. The next prime is 25480021283. The reversal of 25480021268 is 86212008452.

It can be written as a sum of positive squares in 2 ways, for example, as 1621511824 + 23858509444 = 40268^2 + 154462^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25480021261) 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, 245000153 + ... + 245000256.

It is an arithmetic number, because the mean of its divisors is an integer number (4001670015).

Almost surely, 2^25480021268 is an apocalyptic number.

It is an amenable number.

25480021268 is a deficient number, since it is larger than the sum of its proper divisors (22540018912).

25480021268 is a wasteful number, since it uses less digits than its factorization.

25480021268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490000426 (or 490000424 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The spelling of 25480021268 in words is "twenty-five billion, four hundred eighty million, twenty-one thousand, two hundred sixty-eight".