425665248 has 48 divisors (see below), whose sum is σ = 1155908880. Its totient is φ = 136994816.

The previous prime is 425665231. The next prime is 425665249. The reversal of 425665248 is 842566524.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425665249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73665 + ... + 79232.

It is an arithmetic number, because the mean of its divisors is an integer number (24081435).

Almost surely, 2^425665248 is an apocalyptic number.

425665248 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

425665248 is an abundant number, since it is smaller than the sum of its proper divisors (730243632).

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

425665248 is a wasteful number, since it uses less digits than its factorization.

425665248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152939 (or 152931 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The square root of 425665248 is about 20631.6564531305. The cubic root of 425665248 is about 752.2393798048.

The spelling of 425665248 in words is "four hundred twenty-five million, six hundred sixty-five thousand, two hundred forty-eight".