1225423850 has 36 divisors (see below), whose sum is σ = 2651422374. Its totient is φ = 420144480.

The previous prime is 1225423811. The next prime is 1225423873. The reversal of 1225423850 is 583245221.

It can be written as a sum of positive squares in 3 ways, for example, as 1191423289 + 34000561 = 34517^2 + 5831^2 .

It is a super-2 number, since 2×1225423850² = 3003327224297645000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 247637 + ... + 252536.

Almost surely, 2^1225423850 is an apocalyptic number.

1225423850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225423850 is an abundant number, since it is smaller than the sum of its proper divisors (1425998524).

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

1225423850 is a wasteful number, since it uses less digits than its factorization.

1225423850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500199 (or 500187 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1225423850 is about 35006.0544763331. The cubic root of 1225423850 is about 1070.1108715578.

The spelling of 1225423850 in words is "one billion, two hundred twenty-five million, four hundred twenty-three thousand, eight hundred fifty".