261763225 has 12 divisors (see below), whose sum is σ = 335057920. Its totient is φ = 202654800.

The previous prime is 261763223. The next prime is 261763241. The reversal of 261763225 is 522367162.

261763225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 261763225 - 2¹ = 261763223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261763223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168105 + ... + 169654.

Almost surely, 2^261763225 is an apocalyptic number.

261763225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

261763225 is a deficient number, since it is larger than the sum of its proper divisors (73294695).

261763225 is a wasteful number, since it uses less digits than its factorization.

261763225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337800 (or 337795 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 261763225 is about 16179.0983988602. The cubic root of 261763225 is about 639.6899743549.

The spelling of 261763225 in words is "two hundred sixty-one million, seven hundred sixty-three thousand, two hundred twenty-five".