25028617740 has 96 divisors (see below), whose sum is σ = 81449141760. Its totient is φ = 5623858176.

The previous prime is 25028617729. The next prime is 25028617769. The reversal of 25028617740 is 4771682052.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 25028617692 and 25028617701.

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, 480237 + ... + 529796.

It is an arithmetic number, because the mean of its divisors is an integer number (848428560).

Almost surely, 2^25028617740 is an apocalyptic number.

25028617740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25028617740 is an abundant number, since it is smaller than the sum of its proper divisors (56420524020).

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

25028617740 is a wasteful number, since it uses less digits than its factorization.

25028617740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010111 (or 1010109 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 25028617740 in words is "twenty-five billion, twenty-eight million, six hundred seventeen thousand, seven hundred forty".