1225355542 has 8 divisors (see below), whose sum is σ = 1869186600. Its totient is φ = 602293344.

The previous prime is 1225355539. The next prime is 1225355557. The reversal of 1225355542 is 2455535221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1225355542² = 3002992408620227528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1225355498 and 1225355507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5192067 + ... + 5192302.

It is an arithmetic number, because the mean of its divisors is an integer number (233648325).

Almost surely, 2^1225355542 is an apocalyptic number.

1225355542 is a deficient number, since it is larger than the sum of its proper divisors (643831058).

1225355542 is a wasteful number, since it uses less digits than its factorization.

1225355542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384430.

The product of its digits is 60000, while the sum is 34.

The square root of 1225355542 is about 35005.0788029394. The cubic root of 1225355542 is about 1070.0909876916.

The spelling of 1225355542 in words is "one billion, two hundred twenty-five million, three hundred fifty-five thousand, five hundred forty-two".