61163025 has 144 divisors (see below), whose sum is σ = 137401920. Its totient is φ = 23654400.

The previous prime is 61163023. The next prime is 61163029. The reversal of 61163025 is 52036116.

It is not a de Polignac number, because 61163025 - 2¹ = 61163023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61162986 and 61163004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61163023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 687181 + ... + 687269.

It is an arithmetic number, because the mean of its divisors is an integer number (954180).

Almost surely, 2^61163025 is an apocalyptic number.

It is an amenable number.

61163025 is an abundant number, since it is smaller than the sum of its proper divisors (76238895).

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

61163025 is a wasteful number, since it uses less digits than its factorization.

61163025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 61163025 is about 7820.6793183201. The cubic root of 61163025 is about 394.0000880380. Note that the first 4 decimals are identical.

It can be divided in two parts, 611 and 63025, that added together give a palindrome (63636).

The spelling of 61163025 in words is "sixty-one million, one hundred sixty-three thousand, twenty-five".