1225272102 has 16 divisors (see below), whose sum is σ = 2454725952. Its totient is φ = 407727080.

The previous prime is 1225272089. The next prime is 1225272109. The reversal of 1225272102 is 2012725221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225272109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170424 + ... + 177467.

It is an arithmetic number, because the mean of its divisors is an integer number (153420372).

Almost surely, 2^1225272102 is an apocalyptic number.

1225272102 is an abundant number, since it is smaller than the sum of its proper divisors (1229453850).

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

1225272102 is a wasteful number, since it uses less digits than its factorization.

1225272102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348483.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 1225272102 is about 35003.8869555939. The cubic root of 1225272102 is about 1070.0666980288.

Adding to 1225272102 its reverse (2012725221), we get a palindrome (3237997323).

The spelling of 1225272102 in words is "one billion, two hundred twenty-five million, two hundred seventy-two thousand, one hundred two".