25015351240 has 96 divisors (see below), whose sum is σ = 62039456640. Its totient is φ = 9071061120.

The previous prime is 25015351219. The next prime is 25015351247. The reversal of 25015351240 is 4215351052.

It is a junction number, because it is equal to n+sod(n) for n = 25015351199 and 25015351208.

It is not an unprimeable number, because it can be changed into a prime (25015351247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1769239 + ... + 1783321.

It is an arithmetic number, because the mean of its divisors is an integer number (646244340).

Almost surely, 2^25015351240 is an apocalyptic number.

25015351240 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 25015351240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31019728320).

25015351240 is an abundant number, since it is smaller than the sum of its proper divisors (37024105400).

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

25015351240 is a wasteful number, since it uses less digits than its factorization.

25015351240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14483 (or 14468 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 25015351240 in words is "twenty-five billion, fifteen million, three hundred fifty-one thousand, two hundred forty".