261025343 has 8 divisors (see below), whose sum is σ = 268287600. Its totient is φ = 253774080.

The previous prime is 261025339. The next prime is 261025409. The reversal of 261025343 is 343520162.

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

It is a cyclic number.

It is not a de Polignac number, because 261025343 - 2² = 261025339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261025543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75983 + ... + 79343.

It is an arithmetic number, because the mean of its divisors is an integer number (33535950).

Almost surely, 2^261025343 is an apocalyptic number.

261025343 is a deficient number, since it is larger than the sum of its proper divisors (7262257).

261025343 is a wasteful number, since it uses less digits than its factorization.

261025343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 261025343 is about 16156.2787485237. The cubic root of 261025343 is about 639.0883365786.

The spelling of 261025343 in words is "two hundred sixty-one million, twenty-five thousand, three hundred forty-three".