1220625546 has 32 divisors (see below), whose sum is σ = 2791771008. Its totient is φ = 348528960.

The previous prime is 1220625529. The next prime is 1220625629. The reversal of 1220625546 is 6455260221.

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, 64776 + ... + 81468.

It is an arithmetic number, because the mean of its divisors is an integer number (87242844).

Almost surely, 2^1220625546 is an apocalyptic number.

1220625546 is an abundant number, since it is smaller than the sum of its proper divisors (1571145462).

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

1220625546 is a wasteful number, since it uses less digits than its factorization.

1220625546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18446.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1220625546 is about 34937.4519105215. The cubic root of 1220625546 is about 1068.7123258564.

Adding to 1220625546 its reverse (6455260221), we get a palindrome (7675885767).

The spelling of 1220625546 in words is "one billion, two hundred twenty million, six hundred twenty-five thousand, five hundred forty-six".