25045791331640 has 32 divisors (see below), whose sum is σ = 56376738337680. Its totient is φ = 10014101805312.

The previous prime is 25045791331607. The next prime is 25045791331651. The reversal of 25045791331640 is 4613319754052.

It is a congruent number.

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, 131613962 + ... + 131804121.

Almost surely, 2^{25045791331640} is an apocalyptic number.

25045791331640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25045791331640 is an abundant number, since it is smaller than the sum of its proper divisors (31330947006040).

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

25045791331640 is a wasteful number, since it uses less digits than its factorization.

25045791331640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263420471 (or 263420467 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 25045791331640 in words is "twenty-five trillion, forty-five billion, seven hundred ninety-one million, three hundred thirty-one thousand, six hundred forty".