261476025 has 12 divisors (see below), whose sum is σ = 432307152. Its totient is φ = 139453840.

The previous prime is 261476021. The next prime is 261476051. The reversal of 261476025 is 520674162.

261476025 is nontrivially palindromic in base 9.

It is not a de Polignac number, because 261476025 - 2² = 261476021 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261476021) 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, 1743099 + ... + 1743248.

It is an arithmetic number, because the mean of its divisors is an integer number (36025596).

Almost surely, 2^261476025 is an apocalyptic number.

261476025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

261476025 is a deficient number, since it is larger than the sum of its proper divisors (170831127).

261476025 is a wasteful number, since it uses less digits than its factorization.

261476025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486360 (or 3486355 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 261476025 is about 16170.2203138980. The cubic root of 261476025 is about 639.4559381793.

The spelling of 261476025 in words is "two hundred sixty-one million, four hundred seventy-six thousand, twenty-five".