25705457000 has 32 divisors (see below), whose sum is σ = 60150771720. Its totient is φ = 10282182400.

The previous prime is 25705456993. The next prime is 25705457009. The reversal of 25705457000 is 75450752.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8043578596 + 17661878404 = 89686^2 + 132898^2 .

It is not an unprimeable number, because it can be changed into a prime (25705457009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12851729 + ... + 12853728.

Almost surely, 2^25705457000 is an apocalyptic number.

25705457000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25705457000 is an abundant number, since it is smaller than the sum of its proper divisors (34445314720).

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

25705457000 is a wasteful number, since it uses less digits than its factorization.

25705457000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25705478 (or 25705464 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 35.

The spelling of 25705457000 in words is "twenty-five billion, seven hundred five million, four hundred fifty-seven thousand".