247605425 has 12 divisors (see below), whose sum is σ = 325091916. Its totient is φ = 186432000.

The previous prime is 247605409. The next prime is 247605427. The reversal of 247605425 is 524506742.

It can be written as a sum of positive squares in 6 ways, for example, as 30426256 + 217179169 = 5516^2 + 14737^2 .

It is not a de Polignac number, because 247605425 - 2⁴ = 247605409 is a prime.

It is a super-2 number, since 2×247605425² = 122616892978861250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247605427) 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, 290876 + ... + 291725.

It is an arithmetic number, because the mean of its divisors is an integer number (27090993).

Almost surely, 2^247605425 is an apocalyptic number.

247605425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247605425 is a deficient number, since it is larger than the sum of its proper divisors (77486491).

247605425 is a wasteful number, since it uses less digits than its factorization.

247605425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582628 (or 582623 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 35.

The square root of 247605425 is about 15735.4829922694. The cubic root of 247605425 is about 627.9427519251.

The spelling of 247605425 in words is "two hundred forty-seven million, six hundred five thousand, four hundred twenty-five".