261063725 has 12 divisors (see below), whose sum is σ = 348620916. Its totient is φ = 192785280.

The previous prime is 261063661. The next prime is 261063739. The reversal of 261063725 is 527360162.

It can be written as a sum of positive squares in 6 ways, for example, as 47582404 + 213481321 = 6898^2 + 14611^2 .

It is not a de Polignac number, because 261063725 - 2⁶ = 261063661 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261063691 and 261063700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 401312 + ... + 401961.

It is an arithmetic number, because the mean of its divisors is an integer number (29051743).

Almost surely, 2^261063725 is an apocalyptic number.

261063725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

261063725 is a deficient number, since it is larger than the sum of its proper divisors (87557191).

261063725 is a wasteful number, since it uses less digits than its factorization.

261063725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803296 (or 803291 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 261063725 is about 16157.4665402717. The cubic root of 261063725 is about 639.1196595733.

The spelling of 261063725 in words is "two hundred sixty-one million, sixty-three thousand, seven hundred twenty-five".