260721625 has 32 divisors (see below), whose sum is σ = 341692416. Its totient is φ = 198360000.

The previous prime is 260721611. The next prime is 260721677. The reversal of 260721625 is 526127062.

It is not a de Polignac number, because 260721625 - 2⁹ = 260721113 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235824 + ... + 236926.

It is an arithmetic number, because the mean of its divisors is an integer number (10677888).

Almost surely, 2^260721625 is an apocalyptic number.

260721625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

260721625 is a deficient number, since it is larger than the sum of its proper divisors (80970791).

260721625 is a wasteful number, since it uses less digits than its factorization.

260721625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 260721625 is about 16146.8766329591. The cubic root of 260721625 is about 638.8403683659.

Adding to 260721625 its reverse (526127062), we get a palindrome (786848687).

The spelling of 260721625 in words is "two hundred sixty million, seven hundred twenty-one thousand, six hundred twenty-five".