425021157906 has 32 divisors (see below), whose sum is σ = 851734268928. Its totient is φ = 141391985280.

The previous prime is 425021157859. The next prime is 425021157931. The reversal of 425021157906 is 609751120524.

It is a Curzon number.

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, 6791350 + ... + 6853646.

It is an arithmetic number, because the mean of its divisors is an integer number (26616695904).

Almost surely, 2^425021157906 is an apocalyptic number.

425021157906 is an abundant number, since it is smaller than the sum of its proper divisors (426713111022).

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

425021157906 is a wasteful number, since it uses less digits than its factorization.

425021157906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64546.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 425021157906 in words is "four hundred twenty-five billion, twenty-one million, one hundred fifty-seven thousand, nine hundred six".