611128450725 has 48 divisors (see below), whose sum is σ = 1089553222464. Its totient is φ = 300467520000.

The previous prime is 611128450711. The next prime is 611128450741. The reversal of 611128450725 is 527054821116.

It is a happy number.

It is not a de Polignac number, because 611128450725 - 2⁹ = 611128450213 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 330150 + ... + 1153800.

It is an arithmetic number, because the mean of its divisors is an integer number (22699025468).

Almost surely, 2^611128450725 is an apocalyptic number.

611128450725 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

611128450725 is a deficient number, since it is larger than the sum of its proper divisors (478424771739).

611128450725 is a wasteful number, since it uses less digits than its factorization.

611128450725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824438 (or 824433 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The spelling of 611128450725 in words is "six hundred eleven billion, one hundred twenty-eight million, four hundred fifty thousand, seven hundred twenty-five".