1223789625 has 96 divisors (see below), whose sum is σ = 2376410400. Its totient is φ = 603648000.

The previous prime is 1223789621. The next prime is 1223789657. The reversal of 1223789625 is 5269873221.

1223789625 is a `hidden beast` number, since 12 + 2 + 3 + 7 + 8 + 9 + 625 = 666.

It can be written as a sum of positive squares in 16 ways, for example, as 768564729 + 455224896 = 27723^2 + 21336^2 .

It is not a de Polignac number, because 1223789625 - 2² = 1223789621 is a prime.

It is a super-2 number, since 2×1223789625² = 2995322092515281250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1223789621) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1166101 + ... + 1167149.

It is an arithmetic number, because the mean of its divisors is an integer number (24754275).

Almost surely, 2^1223789625 is an apocalyptic number.

1223789625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1223789625 is a deficient number, since it is larger than the sum of its proper divisors (1152620775).

1223789625 is a wasteful number, since it uses less digits than its factorization.

1223789625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1135 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1223789625 is about 34982.7046553007. The cubic root of 1223789625 is about 1069.6349600555.

The spelling of 1223789625 in words is "one billion, two hundred twenty-three million, seven hundred eighty-nine thousand, six hundred twenty-five".