25000615490838 has 64 divisors (see below), whose sum is σ = 54689892610752. Its totient is φ = 7572556892160.

The previous prime is 25000615490827. The next prime is 25000615490839. The reversal of 25000615490838 is 83809451600052.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25000615490839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1247145 + ... + 7180292.

It is an arithmetic number, because the mean of its divisors is an integer number (854529572043).

Almost surely, 2^{25000615490838} is an apocalyptic number.

25000615490838 is an abundant number, since it is smaller than the sum of its proper divisors (29689277119914).

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

25000615490838 is a wasteful number, since it uses less digits than its factorization.

25000615490838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8428049.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 25000615490838 in words is "twenty-five trillion, six hundred fifteen million, four hundred ninety thousand, eight hundred thirty-eight".