1225514542 has 16 divisors (see below), whose sum is σ = 2111551200. Its totient is φ = 522553248.

The previous prime is 1225514539. The next prime is 1225514561. The reversal of 1225514542 is 2454155221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219417 + ... + 224932.

It is an arithmetic number, because the mean of its divisors is an integer number (131971950).

Almost surely, 2^1225514542 is an apocalyptic number.

1225514542 is a deficient number, since it is larger than the sum of its proper divisors (886036658).

1225514542 is a wasteful number, since it uses less digits than its factorization.

1225514542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444555.

The product of its digits is 16000, while the sum is 31.

The square root of 1225514542 is about 35007.3498282861. The cubic root of 1225514542 is about 1070.1372700705.

Adding to 1225514542 its reverse (2454155221), we get a palindrome (3679669763).

The spelling of 1225514542 in words is "one billion, two hundred twenty-five million, five hundred fourteen thousand, five hundred forty-two".