25275252500 has 60 divisors (see below), whose sum is σ = 55316767968. Its totient is φ = 10101900000.

The previous prime is 25275252487. The next prime is 25275252539. The reversal of 25275252500 is 525257252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3774155 + ... + 3780845.

Almost surely, 2^25275252500 is an apocalyptic number.

25275252500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25275252500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27658383984).

25275252500 is an abundant number, since it is smaller than the sum of its proper divisors (30041515468).

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

25275252500 is a wasteful number, since it uses less digits than its factorization.

25275252500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8226 (or 8209 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 35.

The spelling of 25275252500 in words is "twenty-five billion, two hundred seventy-five million, two hundred fifty-two thousand, five hundred".