25375515000 has 640 divisors, whose sum is σ = 92202485760. Its totient is φ = 5808000000.

The previous prime is 25375514993. The next prime is 25375515007. The reversal of 25375515000 is 51557352.

It is an interprime number because it is at equal distance from previous prime (25375514993) and next prime (25375515007).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25375515007) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 618914980 + ... + 618915020.

It is an arithmetic number, because the mean of its divisors is an integer number (144066384).

Almost surely, 2^25375515000 is an apocalyptic number.

25375515000 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 25375515000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46101242880).

25375515000 is an abundant number, since it is smaller than the sum of its proper divisors (66826970760).

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

25375515000 is a wasteful number, since it uses less digits than its factorization.

25375515000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 33.

The spelling of 25375515000 in words is "twenty-five billion, three hundred seventy-five million, five hundred fifteen thousand".