247475025 has 36 divisors (see below), whose sum is σ = 506580672. Its totient is φ = 113130720.

The previous prime is 247475023. The next prime is 247475083. The reversal of 247475025 is 520574742.

It is a happy number.

It is not a de Polignac number, because 247475025 - 2¹ = 247475023 is a prime.

It is a super-2 number, since 2×247475025² = 122487775997501250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247475021) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76989 + ... + 80138.

Almost surely, 2^247475025 is an apocalyptic number.

247475025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247475025 is an abundant number, since it is smaller than the sum of its proper divisors (259105647).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247475025 is a wasteful number, since it uses less digits than its factorization.

247475025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157150 (or 157142 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 247475025 is about 15731.3389449214. The cubic root of 247475025 is about 627.8324983989.

The spelling of 247475025 in words is "two hundred forty-seven million, four hundred seventy-five thousand, twenty-five".