25515004265250 has 32 divisors (see below), whose sum is σ = 63685450647936. Its totient is φ = 6804001137200.

The previous prime is 25515004265237. The next prime is 25515004265293. The reversal of 25515004265250 is 5256240051552.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17010002094 + ... + 17010003593.

It is an arithmetic number, because the mean of its divisors is an integer number (1990170332748).

Almost surely, 2^{25515004265250} is an apocalyptic number.

25515004265250 is an abundant number, since it is smaller than the sum of its proper divisors (38170446382686).

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

25515004265250 is a wasteful number, since it uses less digits than its factorization.

25515004265250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34020005707 (or 34020005697 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 25515004265250 in words is "twenty-five trillion, five hundred fifteen billion, four million, two hundred sixty-five thousand, two hundred fifty".