25515426848 has 24 divisors (see below), whose sum is σ = 50237551980. Its totient is φ = 12756683520.

The previous prime is 25515426757. The next prime is 25515426883. The reversal of 25515426848 is 84862451552.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24046084624 + 1469342224 = 155068^2 + 38332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25515426796 and 25515426805.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511898 + ... + 559526.

Almost surely, 2^25515426848 is an apocalyptic number.

It is an amenable number.

25515426848 is a deficient number, since it is larger than the sum of its proper divisors (24722125132).

25515426848 is a wasteful number, since it uses less digits than its factorization.

25515426848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64380 (or 64372 counting only the distinct ones).

The product of its digits is 3072000, while the sum is 50.

The spelling of 25515426848 in words is "twenty-five billion, five hundred fifteen million, four hundred twenty-six thousand, eight hundred forty-eight".