25747937420 has 48 divisors (see below), whose sum is σ = 57486179520. Its totient is φ = 9665500416.

The previous prime is 25747937387. The next prime is 25747937429. The reversal of 25747937420 is 2473974752.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25747937429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503675 + ... + 552434.

It is an arithmetic number, because the mean of its divisors is an integer number (1197628740).

Almost surely, 2^25747937420 is an apocalyptic number.

25747937420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25747937420 is an abundant number, since it is smaller than the sum of its proper divisors (31738242100).

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

25747937420 is a wasteful number, since it uses less digits than its factorization.

25747937420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056194 (or 1056192 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 50.

The spelling of 25747937420 in words is "twenty-five billion, seven hundred forty-seven million, nine hundred thirty-seven thousand, four hundred twenty".