261414183625 has 32 divisors (see below), whose sum is σ = 379170904320. Its totient is φ = 176217177600.

The previous prime is 261414183571. The next prime is 261414183661. The reversal of 261414183625 is 526381414162.

It is not a de Polignac number, because 261414183625 - 2⁷ = 261414183497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2480232 + ... + 2583481.

It is an arithmetic number, because the mean of its divisors is an integer number (11849090760).

Almost surely, 2^261414183625 is an apocalyptic number.

261414183625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

261414183625 is a deficient number, since it is larger than the sum of its proper divisors (117756720695).

261414183625 is an equidigital number, since it uses as much as digits as its factorization.

261414183625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063794 (or 5063784 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

Adding to 261414183625 its reverse (526381414162), we get a palindrome (787795597787).

The spelling of 261414183625 in words is "two hundred sixty-one billion, four hundred fourteen million, one hundred eighty-three thousand, six hundred twenty-five".