425557066 has 32 divisors (see below), whose sum is σ = 713875968. Its totient is φ = 188630640.

The previous prime is 425557051. The next prime is 425557103. The reversal of 425557066 is 660755524.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150421 + ... + 153223.

It is an arithmetic number, because the mean of its divisors is an integer number (22308624).

Almost surely, 2^425557066 is an apocalyptic number.

425557066 is a deficient number, since it is larger than the sum of its proper divisors (288318902).

425557066 is a wasteful number, since it uses less digits than its factorization.

425557066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986.

The product of its (nonzero) digits is 252000, while the sum is 40.

The square root of 425557066 is about 20629.0345387272. The cubic root of 425557066 is about 752.1756476773.

The spelling of 425557066 in words is "four hundred twenty-five million, five hundred fifty-seven thousand, sixty-six".