25015320000 has 420 divisors, whose sum is σ = 97759500696. Its totient is φ = 6063360000.

The previous prime is 25015319981. The next prime is 25015320019. The reversal of 25015320000 is 2351052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25015319981) and next prime (25015320019).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3956842 + ... + 3963158.

Almost surely, 2^25015320000 is an apocalyptic number.

25015320000 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 25015320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48879750348).

25015320000 is an abundant number, since it is smaller than the sum of its proper divisors (72744180696).

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

25015320000 is a wasteful number, since it uses less digits than its factorization.

25015320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6366 (or 6338 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

Adding to 25015320000 its reverse (2351052), we get a palindrome (25017671052).

The spelling of 25015320000 in words is "twenty-five billion, fifteen million, three hundred twenty thousand".