25357561068 has 48 divisors (see below), whose sum is σ = 68068012544. Its totient is φ = 7197033600.

The previous prime is 25357561057. The next prime is 25357561069. The reversal of 25357561068 is 86016575352.

It is not an unprimeable number, because it can be changed into a prime (25357561069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986905 + ... + 1012272.

Almost surely, 2^25357561068 is an apocalyptic number.

25357561068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25357561068 is an abundant number, since it is smaller than the sum of its proper divisors (42710451476).

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

25357561068 is a wasteful number, since it uses less digits than its factorization.

25357561068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999342 (or 1999340 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 25357561068 in words is "twenty-five billion, three hundred fifty-seven million, five hundred sixty-one thousand, sixty-eight".