1225577406 has 64 divisors (see below), whose sum is σ = 2644980480. Its totient is φ = 377395200.

The previous prime is 1225577399. The next prime is 1225577417. The reversal of 1225577406 is 6047755221.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1165581 + ... + 1166631.

It is an arithmetic number, because the mean of its divisors is an integer number (41327820).

Almost surely, 2^1225577406 is an apocalyptic number.

1225577406 is an abundant number, since it is smaller than the sum of its proper divisors (1419403074).

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

1225577406 is a wasteful number, since it uses less digits than its factorization.

1225577406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 1225577406 is about 35008.2476853669. The cubic root of 1225577406 is about 1070.1555676799.

The spelling of 1225577406 in words is "one billion, two hundred twenty-five million, five hundred seventy-seven thousand, four hundred six".