247625745 has 16 divisors (see below), whose sum is σ = 397094400. Its totient is φ = 131769344.

The previous prime is 247625731. The next prime is 247625747. The reversal of 247625745 is 547526742.

It is a cyclic number.

It is not a de Polignac number, because 247625745 - 2⁶ = 247625681 is a prime.

It is a super-2 number, since 2×247625745² = 122637019173610050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247625697 and 247625706.

It is not an unprimeable number, because it can be changed into a prime (247625747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11649 + ... + 25118.

It is an arithmetic number, because the mean of its divisors is an integer number (24818400).

Almost surely, 2^247625745 is an apocalyptic number.

It is an amenable number.

247625745 is a deficient number, since it is larger than the sum of its proper divisors (149468655).

247625745 is a wasteful number, since it uses less digits than its factorization.

247625745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37224.

The product of its digits is 470400, while the sum is 42.

The square root of 247625745 is about 15736.1286535158. The cubic root of 247625745 is about 627.9599290497.

The spelling of 247625745 in words is "two hundred forty-seven million, six hundred twenty-five thousand, seven hundred forty-five".