1225335878 has 32 divisors (see below), whose sum is σ = 2100080640. Its totient is φ = 531528480.

The previous prime is 1225335871. The next prime is 1225335883. The reversal of 1225335878 is 8785335221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225335871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52973 + ... + 72503.

It is an arithmetic number, because the mean of its divisors is an integer number (65627520).

Almost surely, 2^1225335878 is an apocalyptic number.

1225335878 is a deficient number, since it is larger than the sum of its proper divisors (874744762).

1225335878 is a wasteful number, since it uses less digits than its factorization.

1225335878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19692.

The product of its digits is 403200, while the sum is 44.

The square root of 1225335878 is about 35004.7979282841. The cubic root of 1225335878 is about 1070.0852635348.

The spelling of 1225335878 in words is "one billion, two hundred twenty-five million, three hundred thirty-five thousand, eight hundred seventy-eight".