1988422425 has 240 divisors, whose sum is σ = 4375166400. Its totient is φ = 881971200.

The previous prime is 1988422417. The next prime is 1988422441. The reversal of 1988422425 is 5242248891.

It is not a de Polignac number, because 1988422425 - 2³ = 1988422417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 22341781 + ... + 22341869.

It is an arithmetic number, because the mean of its divisors is an integer number (18229860).

Almost surely, 2^1988422425 is an apocalyptic number.

1988422425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1988422425 is an abundant number, since it is smaller than the sum of its proper divisors (2386743975).

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

1988422425 is a wasteful number, since it uses less digits than its factorization.

1988422425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 184 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 1988422425 is about 44591.7304553210. The cubic root of 1988422425 is about 1257.4852052271.

The spelling of 1988422425 in words is "one billion, nine hundred eighty-eight million, four hundred twenty-two thousand, four hundred twenty-five".