425623566 has 16 divisors (see below), whose sum is σ = 856962000. Its totient is φ = 140922048.

The previous prime is 425623559. The next prime is 425623571. The reversal of 425623566 is 665326524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237151 + ... + 238938.

It is an arithmetic number, because the mean of its divisors is an integer number (53560125).

Almost surely, 2^425623566 is an apocalyptic number.

425623566 is an abundant number, since it is smaller than the sum of its proper divisors (431338434).

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

425623566 is a wasteful number, since it uses less digits than its factorization.

425623566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476243.

The product of its digits is 259200, while the sum is 39.

The square root of 425623566 is about 20630.6462816849. The cubic root of 425623566 is about 752.2148254040.

The spelling of 425623566 in words is "four hundred twenty-five million, six hundred twenty-three thousand, five hundred sixty-six".