1225145105 has 16 divisors (see below), whose sum is σ = 1487617920. Its totient is φ = 968552832.

The previous prime is 1225145093. The next prime is 1225145113. The reversal of 1225145105 is 5015415221.

It is a cyclic number.

It is not a de Polignac number, because 1225145105 - 2¹⁸ = 1224882961 is a prime.

It is a super-2 number, since 2×1225145105² = 3001961056610922050, which contains 22 as substring.

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, 151556 + ... + 159434.

It is an arithmetic number, because the mean of its divisors is an integer number (92976120).

Almost surely, 2^1225145105 is an apocalyptic number.

It is an amenable number.

1225145105 is a deficient number, since it is larger than the sum of its proper divisors (262472815).

1225145105 is a wasteful number, since it uses less digits than its factorization.

1225145105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8248.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 1225145105 is about 35002.0728671889. The cubic root of 1225145105 is about 1070.0297266612.

The spelling of 1225145105 in words is "one billion, two hundred twenty-five million, one hundred forty-five thousand, one hundred five".