25295224240 has 120 divisors (see below), whose sum is σ = 69616887984. Its totient is φ = 8490662400.

The previous prime is 25295224231. The next prime is 25295224261. The reversal of 25295224240 is 4242259252.

It is a self number, because there is not a number n which added to its sum of digits gives 25295224240.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25335 + ... + 226345.

Almost surely, 2^25295224240 is an apocalyptic number.

25295224240 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 25295224240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34808443992).

25295224240 is an abundant number, since it is smaller than the sum of its proper divisors (44321663744).

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

25295224240 is a wasteful number, since it uses less digits than its factorization.

25295224240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201059 (or 201042 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 25295224240 in words is "twenty-five billion, two hundred ninety-five million, two hundred twenty-four thousand, two hundred forty".