61254590265 has 192 divisors, whose sum is σ = 124469250048. Its totient is φ = 27569203200.

The previous prime is 61254590263. The next prime is 61254590329. The reversal of 61254590265 is 56209545216.

61254590265 is a `hidden beast` number, since 6 + 1 + 2 + 54 + 590 + 2 + 6 + 5 = 666.

It is not a de Polignac number, because 61254590265 - 2¹ = 61254590263 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61254590265.

It is not an unprimeable number, because it can be changed into a prime (61254590263) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 103295809 + ... + 103296401.

It is an arithmetic number, because the mean of its divisors is an integer number (648277344).

Almost surely, 2^61254590265 is an apocalyptic number.

It is an amenable number.

61254590265 is an abundant number, since it is smaller than the sum of its proper divisors (63214659783).

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

61254590265 is a wasteful number, since it uses less digits than its factorization.

61254590265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 61254590265 in words is "sixty-one billion, two hundred fifty-four million, five hundred ninety thousand, two hundred sixty-five".