25742361513640 has 32 divisors (see below), whose sum is σ = 58362453214560. Its totient is φ = 10218341972800.

The previous prime is 25742361513553. The next prime is 25742361513679. The reversal of 25742361513640 is 4631516324752.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2456326966 + ... + 2456337445.

It is an arithmetic number, because the mean of its divisors is an integer number (1823826662955).

Almost surely, 2^{25742361513640} is an apocalyptic number.

25742361513640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25742361513640 is an abundant number, since it is smaller than the sum of its proper divisors (32620091700920).

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

25742361513640 is a wasteful number, since it uses less digits than its factorization.

25742361513640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912664553 (or 4912664549 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 25742361513640 in words is "twenty-five trillion, seven hundred forty-two billion, three hundred sixty-one million, five hundred thirteen thousand, six hundred forty".