261472125 has 16 divisors (see below), whose sum is σ = 435090240. Its totient is φ = 139451600.

The previous prime is 261472117. The next prime is 261472147. The reversal of 261472125 is 521274162.

It is not a de Polignac number, because 261472125 - 2³ = 261472117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261472092 and 261472101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348255 + ... + 349004.

It is an arithmetic number, because the mean of its divisors is an integer number (27193140).

Almost surely, 2^261472125 is an apocalyptic number.

261472125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

261472125 is a deficient number, since it is larger than the sum of its proper divisors (173618115).

261472125 is an equidigital number, since it uses as much as digits as its factorization.

261472125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697277 (or 697267 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 261472125 is about 16170.0997213994. The cubic root of 261472125 is about 639.4527589324.

The spelling of 261472125 in words is "two hundred sixty-one million, four hundred seventy-two thousand, one hundred twenty-five".