425649507 has 4 divisors (see below), whose sum is σ = 567532680. Its totient is φ = 283766336.

The previous prime is 425649491. The next prime is 425649599. The reversal of 425649507 is 705946524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 425649507 - 2⁴ = 425649491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425649407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70941582 + ... + 70941587.

It is an arithmetic number, because the mean of its divisors is an integer number (141883170).

Almost surely, 2^425649507 is an apocalyptic number.

425649507 is a deficient number, since it is larger than the sum of its proper divisors (141883173).

425649507 is a wasteful number, since it uses less digits than its factorization.

425649507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141883172.

The product of its (nonzero) digits is 302400, while the sum is 42.

The square root of 425649507 is about 20631.2749727204. The cubic root of 425649507 is about 752.2301071458.

The spelling of 425649507 in words is "four hundred twenty-five million, six hundred forty-nine thousand, five hundred seven".