25135389000 has 384 divisors, whose sum is σ = 91534510080. Its totient is φ = 6202944000.

The previous prime is 25135388963. The next prime is 25135389061. The reversal of 25135389000 is 98353152.

25135389000 is a `hidden beast` number, since 2 + 513 + 53 + 8 + 90 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6415042 + ... + 6418958.

It is an arithmetic number, because the mean of its divisors is an integer number (238371120).

Almost surely, 2^25135389000 is an apocalyptic number.

25135389000 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 25135389000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45767255040).

25135389000 is an abundant number, since it is smaller than the sum of its proper divisors (66399121080).

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

25135389000 is a wasteful number, since it uses less digits than its factorization.

25135389000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998 (or 3981 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 25135389000 in words is "twenty-five billion, one hundred thirty-five million, three hundred eighty-nine thousand".