1225236726 has 64 divisors (see below), whose sum is σ = 3247027200. Its totient is φ = 334844928.

The previous prime is 1225236709. The next prime is 1225236751. The reversal of 1225236726 is 6276325221.

1225236726 is a `hidden beast` number, since 122 + 523 + 6 + 7 + 2 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61771 + ... + 79158.

It is an arithmetic number, because the mean of its divisors is an integer number (50734800).

Almost surely, 2^1225236726 is an apocalyptic number.

1225236726 is an abundant number, since it is smaller than the sum of its proper divisors (2021790474).

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

1225236726 is a wasteful number, since it uses less digits than its factorization.

1225236726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140970 (or 140964 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 1225236726 is about 35003.3816366362. The cubic root of 1225236726 is about 1070.0563996242.

The spelling of 1225236726 in words is "one billion, two hundred twenty-five million, two hundred thirty-six thousand, seven hundred twenty-six".