1220025432 has 64 divisors (see below), whose sum is σ = 3200520960. Its totient is φ = 386812800.

The previous prime is 1220025413. The next prime is 1220025487. The reversal of 1220025432 is 2345200221.

It is a junction number, because it is equal to n+sod(n) for n = 1220025399 and 1220025408.

It is a congruent 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, 93807 + ... + 106017.

It is an arithmetic number, because the mean of its divisors is an integer number (50008140).

Almost surely, 2^1220025432 is an apocalyptic number.

1220025432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220025432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600260480).

1220025432 is an abundant number, since it is smaller than the sum of its proper divisors (1980495528).

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

1220025432 is a wasteful number, since it uses less digits than its factorization.

1220025432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12424 (or 12420 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1220025432 is about 34928.8624492697. The cubic root of 1220025432 is about 1068.5371549192.

Adding to 1220025432 its reverse (2345200221), we get a palindrome (3565225653).

The spelling of 1220025432 in words is "one billion, two hundred twenty million, twenty-five thousand, four hundred thirty-two".