25003061720 has 128 divisors (see below), whose sum is σ = 72249891840. Its totient is φ = 7568985600.

The previous prime is 25003061591. The next prime is 25003061791. The reversal of 25003061720 is 2716030052.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 25003061720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65606 + ... + 233045.

It is an arithmetic number, because the mean of its divisors is an integer number (564452280).

Almost surely, 2^25003061720 is an apocalyptic number.

25003061720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25003061720 is an abundant number, since it is smaller than the sum of its proper divisors (47246830120).

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

25003061720 is a wasteful number, since it uses less digits than its factorization.

25003061720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298705 (or 298701 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

Adding to 25003061720 its reverse (2716030052), we get a palindrome (27719091772).

The spelling of 25003061720 in words is "twenty-five billion, three million, sixty-one thousand, seven hundred twenty".