61025275540 has 24 divisors (see below), whose sum is σ = 128173473792. Its totient is φ = 24406225440.

The previous prime is 61025275511. The next prime is 61025275541. The reversal of 61025275540 is 4557252016.

It is a super-3 number, since 3×61025275540³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61025275540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61025275541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112276 + ... + 366955.

It is an arithmetic number, because the mean of its divisors is an integer number (5340561408).

Almost surely, 2^61025275540 is an apocalyptic number.

It is an amenable number.

61025275540 is an abundant number, since it is smaller than the sum of its proper divisors (67148198252).

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

61025275540 is a wasteful number, since it uses less digits than its factorization.

61025275540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485607 (or 485605 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 61025275540 in words is "sixty-one billion, twenty-five million, two hundred seventy-five thousand, five hundred forty".