25286795436 has 48 divisors (see below), whose sum is σ = 67560998400. Its totient is φ = 7210919040.

The previous prime is 25286795399. The next prime is 25286795549. The reversal of 25286795436 is 63459768252.

It is a super-2 number, since 2×25286795436² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245136 + ... + 332663.

It is an arithmetic number, because the mean of its divisors is an integer number (1407520800).

Almost surely, 2^25286795436 is an apocalyptic number.

It is an amenable number.

25286795436 is an abundant number, since it is smaller than the sum of its proper divisors (42274202964).

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

25286795436 is a wasteful number, since it uses less digits than its factorization.

25286795436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578334 (or 578332 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 57.

The spelling of 25286795436 in words is "twenty-five billion, two hundred eighty-six million, seven hundred ninety-five thousand, four hundred thirty-six".