1225239187 has 8 divisors (see below), whose sum is σ = 1345800960. Its totient is φ = 1110285000.

The previous prime is 1225239179. The next prime is 1225239221. The reversal of 1225239187 is 7819325221.

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

It is a cyclic number.

It is not a de Polignac number, because 1225239187 - 2³ = 1225239179 is a prime.

It is a super-2 number, since 2×1225239187² = 3002422130720841938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225239157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1401439 + ... + 1402312.

It is an arithmetic number, because the mean of its divisors is an integer number (168225120).

Almost surely, 2^1225239187 is an apocalyptic number.

1225239187 is a deficient number, since it is larger than the sum of its proper divisors (120561773).

1225239187 is a wasteful number, since it uses less digits than its factorization.

1225239187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803793.

The product of its digits is 60480, while the sum is 40.

The square root of 1225239187 is about 35003.4167903649. The cubic root of 1225239187 is about 1070.0571160590.

The spelling of 1225239187 in words is "one billion, two hundred twenty-five million, two hundred thirty-nine thousand, one hundred eighty-seven".