261225325355 has 8 divisors (see below), whose sum is σ = 313665223200. Its totient is φ = 208850371776.

The previous prime is 261225325349. The next prime is 261225325393. The reversal of 261225325355 is 553523522162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261225325355 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16227215 + ... + 16243304.

It is an arithmetic number, because the mean of its divisors is an integer number (39208152900).

Almost surely, 2^261225325355 is an apocalyptic number.

261225325355 is a deficient number, since it is larger than the sum of its proper divisors (52439897845).

261225325355 is a wasteful number, since it uses less digits than its factorization.

261225325355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32472133.

The product of its digits is 540000, while the sum is 41.

The spelling of 261225325355 in words is "two hundred sixty-one billion, two hundred twenty-five million, three hundred twenty-five thousand, three hundred fifty-five".